def logix_test_once( obj, req ):
req_source = cpppo.peekable( req )
req_data = cpppo.dotdict()
with obj.parser as machine:
for m,s in machine.run( source=req_source, data=req_data ):
pass
if log.isEnabledFor( logging.NORMAL ):
log.normal( "Logix Request parsed: %s", enip.enip_format( req_data ))
# If we ask a Logix Object to process the request, it should respond.
processed = obj.request( req_data )
if log.isEnabledFor( logging.NORMAL ):
log.normal( "Logix Request processed: %s", enip.enip_format( req_data ))
# And, the same object should be able to parse the request's generated reply
rpy_source = cpppo.peekable( bytes( req_data.input ))
rpy_data = cpppo.dotdict()
with obj.parser as machine:
for i,(m,s) in enumerate( machine.run( source=rpy_source, data=rpy_data )):
if log.isEnabledFor( logging.INFO ):
log.info( "%s #%3d -> %10.10s; next byte %3d: %-10.10r: %r", m.name_centered(),
i, s, rpy_source.sent, rpy_source.peek(), rpy_data )
if log.isEnabledFor( logging.NORMAL ):
log.normal( "Logix Reply processed: %s", enip.enip_format( rpy_data ))
return processed,req_data,rpy_data
def logix_test_once(obj, req):
req_source = cpppo.peekable(req)
req_data = cpppo.dotdict()
with obj.parser as machine:
for m, s in machine.run(source=req_source, data=req_data):
pass
if log.isEnabledFor(logging.NORMAL):
log.normal("Logix Request parsed: %s", enip.enip_format(req_data))
# If we ask a Logix Object to process the request, it should respond.
processed = obj.request(req_data)
if log.isEnabledFor(logging.NORMAL):
log.normal("Logix Request processed: %s", enip.enip_format(req_data))
# And, the same object should be able to parse the request's generated reply
rpy_source = cpppo.peekable(bytes(req_data.input))
rpy_data = cpppo.dotdict()
with obj.parser as machine:
for i, (m,
s) in enumerate(machine.run(source=rpy_source, data=rpy_data)):
if log.isEnabledFor(logging.INFO):
log.info("%s #%3d -> %10.10s; next byte %3d: %-10.10r: %r",
m.name_centered(), i, s, rpy_source.sent,
rpy_source.peek(), rpy_data)
if log.isEnabledFor(logging.NORMAL):
log.normal("Logix Reply processed: %s", enip.enip_format(rpy_data))
return processed, req_data, rpy_data
def test_once():
source = cpppo.peekable(req_1)
data = cpppo.dotdict()
with Obj.parser as machine:
for m, w in machine.run(source=source, data=data):
pass
log.normal("Logix Request parsed: %s", enip.enip_format(data))
# If we ask a Logix Object to process the request, it should respond.
processed = Obj.request(data)
log.normal("Logix Request processed: %s", enip.enip_format(data))
return processed, data
def test_once():
source = cpppo.peekable( req_1 )
data = cpppo.dotdict()
with Obj.parser as machine:
for m,w in machine.run( source=source, data=data ):
pass
log.normal( "Logix Request parsed: %s", enip.enip_format( data ))
# If we ask a Logix Object to process the request, it should respond.
processed = Obj.request( data )
log.normal( "Logix Request processed: %s", enip.enip_format( data ))
return processed, data
def search_lan(address, broadcast=True, timeout=1.0):
"""Discover the number of CIP chassis and backplane devices in the address/network."""
chassis, devices = 0, 0
for target in list_identity(address=address,
broadcast=broadcast,
timeout=timeout):
identity_object = target.enip.CIP.list_identity.CPF.item[
0].identity_object
chassis += 1
print(enip.enip_format(identity_object))
print()
print("%-32s @ %s:%s" %
(identity_object.product_name, identity_object.sin_addr,
identity_object.sin_port))
for route_path, module in scan_backplane(
address=(identity_object.sin_addr, identity_object.sin_port)):
print(" %24s: %s" % (route_path, module))
if route_path:
print(" Slot %3s: %-32s (Ser. #%s)" %
(route_path[0]['link'], str(module[6]), module[5]))
else:
# No route_path; Must be a simple non-routing device (eg. MicroLogix)
print(" : %-32s (Ser. #%s)" %
(str(module[6]), module[5]))
devices += 1
return chassis, devices
def test_hart_pass_thru_simulated(simulated_hart_gateway):
"""Simulated HART I/O card; always returns Pass-thru Init handle 99 (won't work on a real device)"""
command, address = simulated_hart_gateway
#address = ('127.0.0.1',44818) # If you run: python3 ./hart_test.py
try:
assert address, "Unable to detect HART EtherNet/IP CIP Gateway IP address"
hio = client.connector(host=address[0], port=address[1])
operations = [
{
"method": "service_code",
"code": HART.PT_INI_REQ,
"data": [1, 0], # HART: Read primary variable
"data_size":
4 + 2, # Known response size: command,status,<payload>
"path": '@0x%X/8' %
(HART.class_id), # Instance 1-8 ==> HART Channel 0-7
},
{
"method": "service_code",
"code": HART.PT_QRY_REQ,
"data": [99], # HART: Pass-thru Query handle
"data_size": 4 +
5, # Known response size: 5 (units + 4-byte real in network order)
"path": '@0x%X/8' %
(HART.class_id), # Instance 1-8 ==> HART Channel 0-7
},
]
# Now, use the underlying client.connector to issue a HART "Read Dynamic Variable" Service Code
cmdbuf = ''
with hio:
results = []
failures = 0
for idx, dsc, req, rpy, sts, val in hio.pipeline(
operations=client.parse_operations(operations),
**hart_kwds):
log.normal("Client %s: %s --> %r: %s", hio, dsc, val,
enip.enip_format(rpy))
if not val:
log.warning(
"Client %s harvested %d/%d results; failed request: %s",
hio, len(results), len(operations), rpy)
failures += 1
results.append((dsc, val, rpy))
#cmdbuf = command_logging( command, cmdbuf )
# assert failures == 0 # statuses represent HART I/O status, not CIP response status
assert results[0][-1].init.status in (
32, 33, 35) # 32 busy, 33 initiated, 35 device offline
assert results[1][-1].query.status in (
0, 34, 35) # 0 success, 34 running, 35 dead
except Exception as exc:
log.warning("Test terminated with exception: %s", exc)
raise
def unconnected_send(self, request, route_path=None, send_path=None, timeout=None):
if route_path is None:
# Default to the CPU in chassis (link 0), port 1
route_path = [{"link": 0, "port": 1}]
if send_path is None:
# Default to the Connection Manager
send_path = [{"class": 6}, {"instance": 1}]
assert isinstance(request, dict)
data = cpppo.dotdict()
data.enip = {}
data.enip.session_handle = self.session
data.enip.options = 0
data.enip.status = 0
data.enip.sender_context = {}
data.enip.sender_context.input = bytearray([0x00] * 8)
data.enip.CIP = {}
data.enip.CIP.send_data = {}
sd = data.enip.CIP.send_data
sd.interface = 0
sd.timeout = 0
sd.CPF = {}
sd.CPF.item = [cpppo.dotdict(), cpppo.dotdict()]
sd.CPF.item[0].type_id = 0
sd.CPF.item[1].type_id = 178
sd.CPF.item[1].unconnected_send = {}
us = sd.CPF.item[1].unconnected_send
us.service = 82
us.status = 0
us.priority = 5
us.timeout_ticks = 157
us.path = {"segment": [cpppo.dotdict(d) for d in send_path]}
us.route_path = {"segment": [cpppo.dotdict(d) for d in route_path]}
us.request = request
log.detail("Client Unconnected Send: %s", enip.enip_format(data))
us.request.input = bytearray(logix.Logix.produce(us.request))
sd.input = bytearray(enip.CPF.produce(sd.CPF))
data.enip.input = bytearray(enip.CIP.produce(data.enip))
data.input = bytearray(enip.enip_encode(data.enip))
self.send(data.input, timeout=timeout)
return data
def main(argv=None):
"""Read the specified tag(s). Pass the desired argv (excluding the program
name in sys.arg[0]; typically pass argv=None, which is equivalent to
argv=sys.argv[1:], the default for argparse. Requires at least one tag to
be defined.
"""
ap = argparse.ArgumentParser(description="An EtherNet/IP Client",
epilog="")
ap.add_argument('-v',
'--verbose',
default=0,
action="count",
help="Display logging information.")
ap.add_argument(
'-a',
'--address',
default=("%s:%d" % enip.address),
help="EtherNet/IP interface[:port] to connect to (default: %s:%d)" %
(enip.address[0], enip.address[1]))
ap.add_argument('-l', '--log', help="Log file, if desired")
ap.add_argument('-t',
'--timeout',
default=5.0,
help="EtherNet/IP timeout (default: 5s)")
ap.add_argument('-r',
'--repeat',
default=1,
help="Repeat EtherNet/IP request (default: 1)")
ap.add_argument('tags',
nargs="+",
help="Any tags to read/write, eg: SCADA[1]")
args = ap.parse_args(argv)
addr = args.address.split(':')
assert 1 <= len(
addr
) <= 2, "Invalid --address [<interface>]:[<port>}: %s" % args.address
addr = (str(addr[0]) if addr[0] else enip.address[0],
int(addr[1]) if len(addr) > 1 and addr[1] else enip.address[1])
# Set up logging level (-v...) and --log <file>
levelmap = {
0: logging.WARNING,
1: logging.NORMAL,
2: logging.DETAIL,
3: logging.INFO,
4: logging.DEBUG,
}
cpppo.log_cfg['level'] = (levelmap[args.verbose]
if args.verbose in levelmap else logging.DEBUG)
if args.log:
cpppo.log_cfg['filename'] = args.log
logging.basicConfig(**cpppo.log_cfg)
timeout = float(args.timeout)
repeat = int(args.repeat)
begun = misc.timer()
cli = client(host=addr[0], port=addr[1])
assert cli.writable(timeout=timeout)
elapsed = misc.timer() - begun
log.normal("Client Connected in %7.3f/%7.3fs" % (elapsed, timeout))
# Register, and harvest EtherNet/IP Session Handle
begun = misc.timer()
request = cli.register(timeout=timeout)
elapsed = misc.timer() - begun
log.normal("Client Register Sent %7.3f/%7.3fs: %s" %
(elapsed, timeout, enip.enip_format(request)))
data = None # In case nothing is returned by cli iterable
for data in cli:
elapsed = misc.timer() - begun
log.detail("Client Register Resp %7.3f/%7.3fs: %s" %
(elapsed, timeout, enip.enip_format(data)))
if data is None:
if elapsed <= timeout:
cli.readable(timeout=timeout - elapsed)
continue
break
elapsed = misc.timer() - begun
log.normal("Client Register Rcvd %7.3f/%7.3fs: %s" %
(elapsed, timeout, enip.enip_format(data)))
assert data is not None, "Failed to receive any response"
assert 'enip.status' in data, "Failed to receive EtherNet/IP response"
assert data.enip.status == 0, "EtherNet/IP response indicates failure: %s" % data.enip.status
assert 'enip.CIP.register' in data, "Failed to receive Register response"
cli.session = data.enip.session_handle
# Parse each EtherNet/IP Tag Read or Write; only write operations will have 'data'
# TAG[0] read 1 value index 0 (default)
# TAG[1-5] read 5 values from indices 1 to 5
# TAG[4-7]=1,2,3,4 write 4 values from indices 4 to 7
operations = []
for tag in args.tags:
# Compute tag, elm, end and cnt (default elm is 0, cnt is 1)
val = ''
if '=' in tag:
tag, val = tag.split('=', 1)
if '[' in tag:
tag, elm = tag.split('[', 1)
elm, _ = elm.split(']')
end = elm
if '-' in elm:
elm, end = elm.split('-')
elm, end = int(elm), int(end)
else:
elm, end = 0, 0
cnt = end + 1 - elm
opr = {
'path': [{
'symbolic': tag
}, {
'element': elm
}],
'elements': cnt,
}
if val:
if '.' in val:
opr['tag_type'] = enip.REAL.tag_type
cast = lambda x: float(x)
else:
opr['tag_type'] = enip.INT.tag_type
cast = lambda x: int(x)
# Allow an optional (TYPE)value,value,...
if ')' in val:
def int_validate(x, lo, hi):
res = int(x)
assert lo <= res <= hi, "Invalid %d; not in range (%d,%d)" % (
res, lo, hi)
return res
typ, val = val.split(')')
_, typ = typ.split('(')
opr['tag_type'], cast = {
'REAL': (enip.REAL.tag_type, lambda x: float(x)),
'DINT': (enip.DINT.tag_type,
lambda x: int_validate(x, -2**31, 2**31 - 1)),
'INT': (enip.INT.tag_type,
lambda x: int_validate(x, -2**15, 2**15 - 1)),
'SINT': (enip.SINT.tag_type,
lambda x: int_validate(x, -2**7, 2**7 - 1)),
}[typ.upper()]
opr['data'] = list(map(cast, val.split(',')))
assert len( opr['data'] ) == cnt, \
"Number of data values (%d) doesn't match element count (%d): %s=%s" % (
len( opr['data'] ), cnt, tag, val )
operations.append(opr)
# Perform all specified tag operations, the specified number of repeat times. Doesn't handle
# fragmented reads yet. If any operation fails, return a non-zero exit status.
status = 0
start = misc.timer()
for i in range(repeat):
for op in operations: # {'path': [...], 'elements': #}
begun = misc.timer()
if 'data' in op:
descr = "Write Frag"
request = cli.write(offset=0, timeout=timeout, **op)
else:
descr = "Read Frag"
request = cli.read(offset=0, timeout=timeout, **op)
elapsed = misc.timer() - begun
log.normal("Client %s Sent %7.3f/%7.3fs: %s" %
(descr, elapsed, timeout, enip.enip_format(request)))
response = None
for response in cli:
elapsed = misc.timer() - begun
log.normal(
"Client %s Resp %7.3f/%7.3fs: %s" %
(descr, elapsed, timeout, enip.enip_format(response)))
if response is None:
if elapsed <= timeout:
cli.readable(timeout=timeout - elapsed)
continue
break
elapsed = misc.timer() - begun
log.normal("Client %s Rcvd %7.3f/%7.3fs: %s" %
(descr, elapsed, timeout, enip.enip_format(response)))
tag = op['path'][0]['symbolic']
elm = op['path'][1]['element']
cnt = op['elements']
val = [] # data values read/written
res = None # result of request
act = "??" # denotation of request action
try:
# The response should contain either an status code (possibly with an extended
# status), or the read_frag request's data. Remember; a successful response may
# carry read_frag.data, but report a status == 6 indicating that more data remains
# to return via a subsequent fragmented read request.
request = response.enip.CIP.send_data.CPF.item[
1].unconnected_send.request
if 'read_frag' in request:
act = "=="
val = request.read_frag.data
elif 'write_frag' in request:
act = "<="
val = op['data']
if not request.status:
res = "OK"
else:
res = "Status %d %s" % (request.status,
repr(request.status_ext.data)
if 'status_ext' in request and
request.status_ext.size else "")
if request.status:
if not status:
status = request.status
log.warning("Client %s returned non-zero status: %s",
descr, res)
except AttributeError as exc:
status = 1
res = "Client %s Response missing data: %s" % (descr, exc)
except Exception as exc:
status = 1
res = "Client %s Exception: %s" % exc
log.warning("%10s[%5d-%-5d] %s %r: %r" %
(tag, elm, elm + cnt - 1, act, val, res))
duration = misc.timer() - start
log.warning("Client ReadFrg. Average %7.3f TPS (%7.3fs ea)." %
(repeat / duration, duration / repeat))
return status
def test_logix_multiple():
"""Test the Multiple Request Service. Ensure multiple requests can be successfully handled, and
invalid tags are correctly rejected.
The Logix is a Message_Router instance, and is expected to be at Class 2, Instance 1. Eject any
non-Logix Message_Router that presently exist.
"""
Obj = enip.device.lookup( enip.device.Message_Router.class_id, instance_id=1 )
if not isinstance( Obj, logix.Logix ):
if Obj is not None:
del enip.device.directory['2']['1']
Obj = logix.Logix( instance_id=1 )
# Create some Attributes to test, but mask the big ones from Get Attributes All.
size = 1000
Obj_a1 = Obj.attribute['1'] = enip.device.Attribute( 'parts', enip.parser.DINT, default=[n for n in range( size )],
mask=enip.device.Attribute.MASK_GA_ALL )
Obj_a2 = Obj.attribute['2'] = enip.device.Attribute( 'ControlWord', enip.parser.DINT, default=[0,0])
Obj_a3 = Obj.attribute['3'] = enip.device.Attribute( 'SCADA_40001', enip.parser.INT, default=[n for n in range( size )],
mask=enip.device.Attribute.MASK_GA_ALL )
Obj_a4 = Obj.attribute['4'] = enip.device.Attribute( 'number', enip.parser.REAL, default=0.0)
# Set up a symbolic tag referencing the Logix Object's Attribute
enip.device.symbol['parts'] = {'class': Obj.class_id, 'instance': Obj.instance_id, 'attribute':1 }
enip.device.symbol['ControlWord'] \
= {'class': Obj.class_id, 'instance': Obj.instance_id, 'attribute':2 }
enip.device.symbol['SCADA_40001'] \
= {'class': Obj.class_id, 'instance': Obj.instance_id, 'attribute':3 }
enip.device.symbol['number'] \
= {'class': Obj.class_id, 'instance': Obj.instance_id, 'attribute':4 }
assert len( Obj_a1 ) == size
assert len( Obj_a3 ) == size
assert len( Obj_a4 ) == 1
Obj_a1[0] = 42
Obj_a2[0] = 476
Obj_a4[0] = 1.0
# Ensure that the basic CIP Object requests work on a derived Class.
for description,original,produced,parsed,result,response in GA_tests:
request = cpppo.dotdict( original )
log.warning( "%s; request: %s", description, enip.enip_format( request ))
encoded = Obj.produce( request )
assert encoded == produced, "%s: Didn't produce correct encoded request: %r != %r" % (
description, encoded, produced )
# Now, use the Message_Router's parser to decode the encoded bytes
source = cpppo.rememberable( encoded )
decoded = cpppo.dotdict()
with Obj.parser as machine:
for m,s in enumerate( machine.run( source=source, data=decoded )):
pass
for k,v in cpppo.dotdict( parsed ).items():
assert decoded[k] == v, "%s: Didn't parse expected value: %s != %r in %s" % (
description, k, v, enip.enip_format( decoded ))
# Process the request into a reply, and ensure we get the expected result (some Attributes
# are filtered from Get Attributes All; only a 2-element DINT array and a single REAL should
# be produced)
Obj.request( request )
logging.warning("%s: reply: %s", description, enip.enip_format( request ))
for k,v in cpppo.dotdict( result ).items():
assert k in request and request[k] == v, \
"%s: Didn't result in expected response: %s != %r; got %r" % (
description, k, v, request[k] if k in request else "(not found)" )
# Finally, produce the encoded response
encoded = Obj.produce( request )
assert encoded == response, "%s: Didn't produce correct encoded response: %r != %r" % (
description, encoded, response )
# Test that we correctly compute beg,end,endactual for various Read Tag Fragmented scenarios,
# with 2-byte and 4-byte types. For the purposes of this test, we only look at path...elements.
data = cpppo.dotdict()
data.service = Obj.RD_FRG_RPY
data.path = { 'segment': [ cpppo.dotdict( d )
for d in [
{'element': 0 },
]] }
data.read_frag = {}
data.read_frag.elements = 1000
data.read_frag.offset = 0
# Reply maximum size limited
beg,end,endactual = Obj.reply_elements( Obj_a1, data, 'read_frag' )
assert beg == 0 and end == 125 and endactual == 1000 # DINT == 4 bytes
beg,end,endactual = Obj.reply_elements( Obj_a3, data, 'read_frag' )
assert beg == 0 and end == 250 and endactual == 1000 # INT == 2 bytes
data.read_frag.offset = 125*4 # OK, second request; begin after byte offset of first
beg,end,endactual = Obj.reply_elements( Obj_a1, data, 'read_frag' )
assert beg == 125 and end == 250 and endactual == 1000 # DINT == 4 bytes
# Request elements limited; 0 offset
data.read_frag.elements = 30
data.read_frag.offset = 0
beg,end,endactual = Obj.reply_elements( Obj_a3, data, 'read_frag' )
assert beg == 0 and end == 30 and endactual == 30 # INT == 2 bytes
# Request elements limited; +'ve offset
data.read_frag.elements = 70
data.read_frag.offset = 80
beg,end,endactual = Obj.reply_elements( Obj_a3, data, 'read_frag' )
assert beg == 40 and end == 70 and endactual == 70 # INT == 2 bytes
# Request limited by size of data provided (Write Tag [Fragmented])
data = cpppo.dotdict()
data.service = Obj.WR_FRG_RPY
data.path = { 'segment': [ cpppo.dotdict( d )
for d in [
{'element': 0 },
]] }
data.write_frag = {}
data.write_frag.data = [0] * 100 # 100 elements provided in this request
data.write_frag.elements = 200 # Total request is to write 200 elements
data.write_frag.offset = 16 # request starts 16 bytes in (8 INTs)
beg,end,endactual = Obj.reply_elements( Obj_a3, data, 'write_frag' )
assert beg == 8 and end == 108 and endactual == 200 # INT == 2 bytes
# ... same, but lets say request started somewhere in the middle of the array
data.path = { 'segment': [ cpppo.dotdict( d )
for d in [
{'element': 222 },
]] }
beg,end,endactual = Obj.reply_elements( Obj_a3, data, 'write_frag' )
assert beg == 8+222 and end == 108+222 and endactual == 200+222 # INT == 2 bytes
# Ensure correct computation of (beg,end] that are byte-offset and data/size limited
data = cpppo.dotdict()
data.service = Obj.WR_FRG_RPY
data.path = { 'segment': [] }
data.write_frag = {}
data.write_frag.data = [3,4,5,6]
data.write_frag.offset = 6
beg,end,endactual = Obj.reply_elements( Obj_a3, data, 'write_frag' )
assert beg == 3 and end == 7 and endactual == 1000 # INT == 2 bytes
# Trigger the error cases only accessible via write
# Too many elements provided for attribute capacity
data.write_frag.offset = ( 1000 - 3 ) * 2
try:
beg,end,endactual = Obj.reply_elements( Obj_a3, data, 'write_frag' )
assert False, "Should have raised Exception due to capacity"
except Exception as exc:
assert "capacity exceeded" in str( exc )
data = cpppo.dotdict()
data.service = Obj.RD_FRG_RPY
data.path = { 'segment': [] }
data.read_frag = {}
data.read_frag.offset = 6
beg,end,endactual = Obj.reply_elements( Obj_a3, data, 'read_frag' )
assert beg == 3 and end == 253 and endactual == 1000 # INT == 2 bytes
# And we should be able to read with an offset right up to the last element
data.read_frag.offset = 1998
beg,end,endactual = Obj.reply_elements( Obj_a3, data, 'read_frag' )
assert beg == 999 and end == 1000 and endactual == 1000 # INT == 2 bytes
# Trigger all the remaining error cases
# Unknown service
data.service = Obj.RD_FRG_REQ
try:
beg,end,endactual = Obj.reply_elements( Obj_a3, data, 'read_frag' )
assert False, "Should have raised Exception due to service"
except Exception as exc:
assert "unknown service" in str( exc )
# Offset indivisible by element size
data.service = Obj.RD_FRG_RPY
data.read_frag.offset = 7
try:
beg,end,endactual = Obj.reply_elements( Obj_a3, data, 'read_frag' )
assert False, "Should have raised Exception due to odd byte offset"
except Exception as exc:
assert "element boundary" in str( exc )
# Initial element outside bounds
data.read_frag.offset = 2000
try:
beg,end,endactual = Obj.reply_elements( Obj_a3, data, 'read_frag' )
assert False, "Should have raised Exception due to initial element"
except Exception as exc:
assert "initial element invalid" in str( exc )
# Ending element outside bounds
data.read_frag.offset = 0
data.read_frag.elements = 1001
try:
beg,end,endactual = Obj.reply_elements( Obj_a3, data, 'read_frag' )
assert False, "Should have raised Exception due to ending element"
except Exception as exc:
assert "ending element invalid" in str( exc )
# Beginning element after ending (should be no way to trigger). This request doesn't specify an
# element in the path, hence defaults to element 0, and asks for a number of elements == 2.
# Thus, there is no 6-byte offset possible (a 2-byte offset is, though).
data.read_frag.offset = 6
data.read_frag.elements = 2
try:
beg,end,endactual = Obj.reply_elements( Obj_a3, data, 'read_frag' )
assert False, "Should have raised Exception due to ending element order"
except Exception as exc:
assert "ending element before beginning" in str( exc )
data.read_frag.offset = 2
data.read_frag.elements = 2
beg,end,endactual = Obj.reply_elements( Obj_a3, data, 'read_frag' )
assert beg == 1 and end == 2 and endactual == 2 # INT == 2 bytes
# Test an example valid multiple request
data = cpppo.dotdict()
data.multiple = {}
data.multiple.request = [
cpppo.dotdict(), cpppo.dotdict(), cpppo.dotdict(), cpppo.dotdict(), cpppo.dotdict() ]
req = data.multiple.request
req[0].path = { 'segment': [ cpppo.dotdict( d )
for d in [{'symbolic': 'parts'}]] }
req[0].read_tag = {}
req[0].read_tag.elements = 1
req[1].path = { 'segment': [ cpppo.dotdict( d )
for d in [{'symbolic': 'ControlWord'}]] }
req[1].read_tag = {}
req[1].read_tag.elements = 1
req[2].path = { 'segment': [ cpppo.dotdict( d )
for d in [{'symbolic': 'number'}]] }
req[2].read_tag = {}
req[2].read_tag.elements = 1
req[3].path = { 'segment': [ cpppo.dotdict( d )
for d in [{'symbolic': 'number'}]] }
req[3].write_tag = {}
req[3].write_tag.elements = 1
req[3].write_tag.type = 0x00ca
req[3].write_tag.data = [1.25]
req[4].path = { 'segment': [ cpppo.dotdict( d )
for d in [{'symbolic': 'number'}]] }
req[4].read_tag = {}
req[4].read_tag.elements = 1
request = Obj.produce( data )
req_1 = bytes(bytearray([
0x0A,
0x02,
0x20, 0x02, 0x24, 0x01,
0x05, 0x00,
0x0c, 0x00,
0x18, 0x00,
0x2a, 0x00,
0x36, 0x00,
0x48, 0x00,
0x4C,
0x04, 0x91, 0x05, 0x70, 0x61,
0x72, 0x74, 0x73, 0x00,
0x01, 0x00,
0x4C,
0x07, 0x91, 0x0B, 0x43, 0x6F,
0x6E, 0x74, 0x72, 0x6F, 0x6C,
0x57, 0x6F, 0x72, 0x64, 0x00,
0x01, 0x00,
b'L'[0],
0x04, 0x91, 0x06, b'n'[0], b'u'[0], b'm'[0], b'b'[0], b'e'[0], b'r'[0],
0x01, 0x00,
b'M'[0],
0x04, 0x91, 0x06, b'n'[0], b'u'[0], b'm'[0], b'b'[0], b'e'[0], b'r'[0],
0xca, 0x00, 0x01, 0x00, 0x00, 0x00, 0xa0, 0x3f,
b'L'[0],
0x04, 0x91, 0x06, b'n'[0], b'u'[0], b'm'[0], b'b'[0], b'e'[0], b'r'[0],
0x01, 0x00,
]))
assert request == req_1, \
"Unexpected result from Multiple Request Service; got: \n%r\nvs.\n%r " % ( request, req_1 )
# Now, use the Message_Router's parser
source = cpppo.rememberable( request )
data = cpppo.dotdict()
with Obj.parser as machine:
for i,(m,s) in enumerate( machine.run( source=source, data=data )):
pass
log.normal( "Multiple Request: %s", enip.enip_format( data ))
assert 'multiple' in data, \
"No parsed multiple found in data: %s" % enip.enip_format( data )
assert data.service == enip.device.Message_Router.MULTIPLE_REQ, \
"Expected a Multiple Request Service request: %s" % enip.enip_format( data )
assert data.multiple.number == 5, \
"Expected 5 requests in request.multiple: %s" % enip.enip_format( data )
# And ensure if we re-encode the parsed result, we get the original encoded request back
assert Obj.produce( data ) == req_1
# Process the request into a reply.
Obj.request( data )
log.normal( "Multiple Response: %s", enip.enip_format( data ))
assert data.service == enip.device.Message_Router.MULTIPLE_RPY, \
"Expected a Multiple Request Service reply: %s" % enip.enip_format( data )
rpy_1 = bytearray([
0x8A,
0x00,
0x00,
0x00,
0x05, 0x00,
0x0c, 0x00,
0x16, 0x00,
0x20, 0x00,
0x2a, 0x00,
0x2e, 0x00,
0xCC, 0x00, 0x00, 0x00,
0xC4, 0x00,
0x2A, 0x00, 0x00, 0x00,
0xCC, 0x00, 0x00, 0x00,
0xC4, 0x00,
0xDC, 0x01, 0x00, 0x00,
0xCC, 0x00, 0x00, 0x00,
0xCA, 0x00, 0x00, 0x00, 0x80, 0x3F,
0xcd, 0x00, 0x00, 0x00,
0xcc, 0x00, 0x00, 0x00,
0xca, 0x00, 0x00, 0x00, 0xa0, 0x3f,
])
assert data.input == rpy_1, \
"Unexpected reply from Multiple Request Service request; got: \n%r\nvs.\n%r " % ( data.input, rpy_1 )
# Now lets try some valid and invalid requests
data = cpppo.dotdict()
data.multiple = {}
data.multiple.request = req = [ cpppo.dotdict() ]
req[0].path = { 'segment': [ cpppo.dotdict( d )
for d in [{'symbolic': 'SCADA_40001'}]] }
req[0].read_tag = {}
req[0].read_tag.elements = 1
data.multiple.number = len( data.multiple.request )
request = Obj.produce( data )
req_good = bytearray([
0x0A,
0x02,
0x20, 0x02, ord('$'), 0x01,
0x01, 0x00,
0x04, 0x00,
0x4C,
0x07, 0x91, 0x0b, ord('S'), ord('C'),
ord('A'), ord('D'), ord('A'), ord('_'), ord('4'),
ord('0'), ord('0'), ord('0'), ord('1'), 0x00,
0x01, 0x00,
])
assert request == req_good, \
"Unexpected result from Multiple Request Service request for SCADA_40001; got: \n%r\nvs.\n%r " % ( request, req_good )
Obj.request( data )
rpy_good = bytearray([
0x8A,
0x00,
0x00,
0x00,
0x01, 0x00,
0x04, 0x00,
0xCC, 0x00, 0x00, 0x00,
0xC3, 0x00,
0x00, 0x00,
])
assert data.input == rpy_good, \
"Unexpected reply from Multiple Request Service request for SCADA_40001; got: \n%r\nvs.\n%r " % ( data.input, rpy_good )
# Add an invalid request
data = cpppo.dotdict()
data.multiple = {}
data.multiple.request = req = [ cpppo.dotdict(), cpppo.dotdict() ]
req[0].path = { 'segment': [ cpppo.dotdict( d )
for d in [{'symbolic': 'SCADA_40001'}]] }
req[0].read_tag = {}
req[0].read_tag.elements = 1
req[1].path = { 'segment': [ cpppo.dotdict( d )
for d in [{'symbolic': 'SCADA_40002'}]] }
req[1].read_tag = {}
req[1].read_tag.elements = 1
data.multiple.number = len( data.multiple.request )
request = Obj.produce( data )
req_bad = bytearray([
0x0A,
0x02,
0x20, 0x02, ord('$'), 0x01,
0x02, 0x00,
0x06, 0x00,
0x18, 0x00,
0x4C,
0x07, 0x91, 0x0b, ord('S'), ord('C'),
ord('A'), ord('D'), ord('A'), ord('_'), ord('4'),
ord('0'), ord('0'), ord('0'), ord('1'), 0x00,
0x01, 0x00,
0x4C,
0x07, 0x91, 0x0b, ord('S'), ord('C'),
ord('A'), ord('D'), ord('A'), ord('_'), ord('4'),
ord('0'), ord('0'), ord('0'), ord('2'), 0x00,
0x01, 0x00,
])
assert request == req_bad, \
"Unexpected result from Multiple Request Service request for SCADA_40001/2; got: \n%r\nvs.\n%r " % ( request, req_bad )
Obj.request( data )
rpy_bad = bytearray([
0x8A,
0x00,
0x00,
0x00,
0x02, 0x00,
0x06, 0x00,
0x0e, 0x00,
0xCC, 0x00, 0x00, 0x00,
0xC3, 0x00,
0x00, 0x00,
0xCC, 0x00, 0x05, 0x01, # Status code 0x05 (invalid path)
0x00, 0x00,
])
assert data.input == rpy_bad, \
"Unexpected reply from Multiple Request Service request for SCADA_40001/2; got: \n%r\nvs.\n%r " % ( data.input, rpy_bad )
def test_hart_simple(simulated_hart_gateway):
# No Multiple Service Packet supported by HART I/O Card simulator
command, address = simulated_hart_gateway
#address = ("127.0.0.1", 44818)
#address = ("100.100.102.10", 44818)
route_path = None
route_path = [{'link': 2, 'port': 1}]
try:
assert address, "Unable to detect HART EtherNet/IP CIP Gateway IP address"
hio = client.connector(host=address[0], port=address[1])
# Establish an Implicit EtherNet/IP CIP connection using Forward Open
#hio = client.implicit( host=address[0], port=address[1], connection_path=None )
PV = 1.23
operations = [
{
"method": "service_code",
"code": HART.RD_VAR_REQ,
"data": [], # No payload
"data_size":
4 + 36, # Known response size: command,status,<payload>
"path": '@0x%X/8' %
(HART.class_id), # Instance 1-8 ==> HART Channel 0-7
},
'HART_7_Data.PV = (REAL)0', # would fail 'til first HART Read Dynamic Variable is done
{
"method": "service_code",
"code": HART.RD_VAR_REQ,
"data": [], # No payload
"data_size":
4 + 36, # Known response size: command,status,<payload>
"path": '@0x%X/8' %
(HART.class_id), # Instance 1-8 ==> HART Channel 0-7
},
'HART_7_Data.PV = (REAL)%s' % PV,
{
"method": "service_code",
"code": HART.RD_VAR_REQ,
"data": [], # No payload
"data_size":
4 + 36, # Known response size: command,status,<payload>
"path": '@0x%X/8' %
(HART.class_id), # Instance 1-8 ==> HART Channel 0-7
},
]
# Now, use the underlying client.connector to issue a HART "Read Dynamic Variable" Service Code
simout = ''
with hio:
results = []
failures = 0
for idx, dsc, req, rpy, sts, val in hio.pipeline(
operations=client.parse_operations(operations,
route_path=route_path),
**hart_kwds):
log.normal("Client %s: %s --> %r: %s", hio, dsc, val,
enip.enip_format(rpy))
if not val:
log.warning(
"Client %s harvested %d/%d results; failed request: %s",
hio, len(results), len(operations), rpy)
failures += 1
results.append((dsc, val, rpy))
rpylast = results[-1][-1]
assert failures in (0, 1)
assert near(rpylast.read_var.PV, PV)
except Exception as exc:
log.warning("Test terminated with exception: %s", exc)
raise
def test_logix_multiple():
"""Test the Multiple Request Service. Ensure multiple requests can be successfully handled, and
invalid tags are correctly rejected.
The Logix is a Message_Router instance, and is expected to be at Class 2, Instance 1. Eject any
non-Logix Message_Router that presently exist.
"""
enip.lookup_reset() # Flush out any existing CIP Objects for a fresh start
Obj = logix.Logix(instance_id=1)
# Create some Attributes to test, but mask the big ones from Get Attributes All.
size = 1000
Obj_a1 = Obj.attribute['1'] = enip.device.Attribute(
'parts',
enip.parser.DINT,
default=[n for n in range(size)],
mask=enip.device.Attribute.MASK_GA_ALL)
Obj_a2 = Obj.attribute['2'] = enip.device.Attribute('ControlWord',
enip.parser.DINT,
default=[0, 0])
Obj_a3 = Obj.attribute['3'] = enip.device.Attribute(
'SCADA_40001',
enip.parser.INT,
default=[n for n in range(size)],
mask=enip.device.Attribute.MASK_GA_ALL)
Obj_a4 = Obj.attribute['4'] = enip.device.Attribute('number',
enip.parser.REAL,
default=0.0)
# Set up a symbolic tag referencing the Logix Object's Attribute
enip.device.symbol['parts'] = {
'class': Obj.class_id,
'instance': Obj.instance_id,
'attribute': 1
}
enip.device.symbol['ControlWord'] \
= {'class': Obj.class_id, 'instance': Obj.instance_id, 'attribute':2 }
enip.device.symbol['SCADA_40001'] \
= {'class': Obj.class_id, 'instance': Obj.instance_id, 'attribute':3 }
enip.device.symbol['number'] \
= {'class': Obj.class_id, 'instance': Obj.instance_id, 'attribute':4 }
assert len(Obj_a1) == size
assert len(Obj_a3) == size
assert len(Obj_a4) == 1
Obj_a1[0] = 42
Obj_a2[0] = 476
Obj_a4[0] = 1.0
# Ensure that the basic CIP Object requests work on a derived Class.
for description, original, produced, parsed, result, response in GA_tests:
request = cpppo.dotdict(original)
log.warning("%s; request: %s", description, enip.enip_format(request))
encoded = Obj.produce(request)
assert encoded == produced, "%s: Didn't produce correct encoded request: %r != %r" % (
description, encoded, produced)
# Now, use the Message_Router's parser to decode the encoded bytes
source = cpppo.rememberable(encoded)
decoded = cpppo.dotdict()
with Obj.parser as machine:
for m, s in enumerate(machine.run(source=source, data=decoded)):
pass
for k, v in cpppo.dotdict(parsed).items():
assert decoded[
k] == v, "%s: Didn't parse expected value: %s != %r in %s" % (
description, k, v, enip.enip_format(decoded))
# Process the request into a reply, and ensure we get the expected result (some Attributes
# are filtered from Get Attributes All; only a 2-element DINT array and a single REAL should
# be produced)
Obj.request(request)
logging.warning("%s: reply: %s", description,
enip.enip_format(request))
for k, v in cpppo.dotdict(result).items():
assert k in request and request[k] == v, \
"%s: Didn't result in expected response: %s != %r; got %r" % (
description, k, v, request[k] if k in request else "(not found)" )
# Finally, produce the encoded response
encoded = Obj.produce(request)
assert encoded == response, "%s: Didn't produce correct encoded response: %r != %r" % (
description, encoded, response)
# Test that we correctly compute beg,end,endactual for various Read Tag Fragmented scenarios,
# with 2-byte and 4-byte types. For the purposes of this test, we only look at path...elements.
data = cpppo.dotdict()
data.service = Obj.RD_FRG_RPY
data.path = {
'segment': [cpppo.dotdict(d) for d in [
{
'element': 0
},
]]
}
data.read_frag = {}
data.read_frag.elements = 1000
data.read_frag.offset = 0
# Reply maximum size limited
beg, end, endactual = Obj.reply_elements(Obj_a1, data, 'read_frag')
assert beg == 0 and end == 125 and endactual == 1000 # DINT == 4 bytes
beg, end, endactual = Obj.reply_elements(Obj_a3, data, 'read_frag')
assert beg == 0 and end == 250 and endactual == 1000 # INT == 2 bytes
data.read_frag.offset = 125 * 4 # OK, second request; begin after byte offset of first
beg, end, endactual = Obj.reply_elements(Obj_a1, data, 'read_frag')
assert beg == 125 and end == 250 and endactual == 1000 # DINT == 4 bytes
# Request elements limited; 0 offset
data.read_frag.elements = 30
data.read_frag.offset = 0
beg, end, endactual = Obj.reply_elements(Obj_a3, data, 'read_frag')
assert beg == 0 and end == 30 and endactual == 30 # INT == 2 bytes
# Request elements limited; +'ve offset
data.read_frag.elements = 70
data.read_frag.offset = 80
beg, end, endactual = Obj.reply_elements(Obj_a3, data, 'read_frag')
assert beg == 40 and end == 70 and endactual == 70 # INT == 2 bytes
# Request limited by size of data provided (Write Tag [Fragmented])
data = cpppo.dotdict()
data.service = Obj.WR_FRG_RPY
data.path = {
'segment': [cpppo.dotdict(d) for d in [
{
'element': 0
},
]]
}
data.write_frag = {}
data.write_frag.data = [0] * 100 # 100 elements provided in this request
data.write_frag.elements = 200 # Total request is to write 200 elements
data.write_frag.offset = 16 # request starts 16 bytes in (8 INTs)
beg, end, endactual = Obj.reply_elements(Obj_a3, data, 'write_frag')
assert beg == 8 and end == 108 and endactual == 200 # INT == 2 bytes
# ... same, but lets say request started somewhere in the middle of the array
data.path = {
'segment': [cpppo.dotdict(d) for d in [
{
'element': 222
},
]]
}
beg, end, endactual = Obj.reply_elements(Obj_a3, data, 'write_frag')
assert beg == 8 + 222 and end == 108 + 222 and endactual == 200 + 222 # INT == 2 bytes
# Ensure correct computation of (beg,end] that are byte-offset and data/size limited
data = cpppo.dotdict()
data.service = Obj.WR_FRG_RPY
data.path = {'segment': []}
data.write_frag = {}
data.write_frag.data = [3, 4, 5, 6]
data.write_frag.offset = 6
beg, end, endactual = Obj.reply_elements(Obj_a3, data, 'write_frag')
assert beg == 3 and end == 7 and endactual == 1000 # INT == 2 bytes
# Trigger the error cases only accessible via write
# Too many elements provided for attribute capacity
data.write_frag.offset = (1000 - 3) * 2
try:
beg, end, endactual = Obj.reply_elements(Obj_a3, data, 'write_frag')
assert False, "Should have raised Exception due to capacity"
except Exception as exc:
assert "capacity exceeded" in str(exc)
data = cpppo.dotdict()
data.service = Obj.RD_FRG_RPY
data.path = {'segment': []}
data.read_frag = {}
data.read_frag.offset = 6
beg, end, endactual = Obj.reply_elements(Obj_a3, data, 'read_frag')
assert beg == 3 and end == 253 and endactual == 1000 # INT == 2 bytes
# And we should be able to read with an offset right up to the last element
data.read_frag.offset = 1998
beg, end, endactual = Obj.reply_elements(Obj_a3, data, 'read_frag')
assert beg == 999 and end == 1000 and endactual == 1000 # INT == 2 bytes
# Trigger all the remaining error cases
# Unknown service
data.service = Obj.RD_FRG_REQ
try:
beg, end, endactual = Obj.reply_elements(Obj_a3, data, 'read_frag')
assert False, "Should have raised Exception due to service"
except Exception as exc:
assert "unknown service" in str(exc)
# Offset indivisible by element size
data.service = Obj.RD_FRG_RPY
data.read_frag.offset = 7
try:
beg, end, endactual = Obj.reply_elements(Obj_a3, data, 'read_frag')
assert False, "Should have raised Exception due to odd byte offset"
except Exception as exc:
assert "element boundary" in str(exc)
# Initial element outside bounds
data.read_frag.offset = 2000
try:
beg, end, endactual = Obj.reply_elements(Obj_a3, data, 'read_frag')
assert False, "Should have raised Exception due to initial element"
except Exception as exc:
assert "initial element invalid" in str(exc)
# Ending element outside bounds
data.read_frag.offset = 0
data.read_frag.elements = 1001
try:
beg, end, endactual = Obj.reply_elements(Obj_a3, data, 'read_frag')
assert False, "Should have raised Exception due to ending element"
except Exception as exc:
assert "ending element invalid" in str(exc)
# Beginning element after ending (should be no way to trigger). This request doesn't specify an
# element in the path, hence defaults to element 0, and asks for a number of elements == 2.
# Thus, there is no 6-byte offset possible (a 2-byte offset is, though).
data.read_frag.offset = 6
data.read_frag.elements = 2
try:
beg, end, endactual = Obj.reply_elements(Obj_a3, data, 'read_frag')
assert False, "Should have raised Exception due to ending element order"
except Exception as exc:
assert "ending element before beginning" in str(exc)
data.read_frag.offset = 2
data.read_frag.elements = 2
beg, end, endactual = Obj.reply_elements(Obj_a3, data, 'read_frag')
assert beg == 1 and end == 2 and endactual == 2 # INT == 2 bytes
# Test an example valid multiple request
data = cpppo.dotdict()
data.multiple = {}
data.multiple.request = [
cpppo.dotdict(),
cpppo.dotdict(),
cpppo.dotdict(),
cpppo.dotdict(),
cpppo.dotdict()
]
req = data.multiple.request
req[0].path = {
'segment': [cpppo.dotdict(d) for d in [{
'symbolic': 'parts'
}]]
}
req[0].read_tag = {}
req[0].read_tag.elements = 1
req[1].path = {
'segment': [cpppo.dotdict(d) for d in [{
'symbolic': 'ControlWord'
}]]
}
req[1].read_tag = {}
req[1].read_tag.elements = 1
req[2].path = {
'segment': [cpppo.dotdict(d) for d in [{
'symbolic': 'number'
}]]
}
req[2].read_tag = {}
req[2].read_tag.elements = 1
req[3].path = {
'segment': [cpppo.dotdict(d) for d in [{
'symbolic': 'number'
}]]
}
req[3].write_tag = {}
req[3].write_tag.elements = 1
req[3].write_tag.type = 0x00ca
req[3].write_tag.data = [1.25]
req[4].path = {
'segment': [cpppo.dotdict(d) for d in [{
'symbolic': 'number'
}]]
}
req[4].read_tag = {}
req[4].read_tag.elements = 1
request = Obj.produce(data)
req_1 = bytes(
bytearray([
0x0A,
0x02,
0x20,
0x02,
0x24,
0x01,
0x05,
0x00,
0x0c,
0x00,
0x18,
0x00,
0x2a,
0x00,
0x36,
0x00,
0x48,
0x00,
0x4C,
0x04,
0x91,
0x05,
0x70,
0x61,
0x72,
0x74,
0x73,
0x00,
0x01,
0x00,
0x4C,
0x07,
0x91,
0x0B,
0x43,
0x6F,
0x6E,
0x74,
0x72,
0x6F,
0x6C,
0x57,
0x6F,
0x72,
0x64,
0x00,
0x01,
0x00,
b'L'[0],
0x04,
0x91,
0x06,
b'n'[0],
b'u'[0],
b'm'[0],
b'b'[0],
b'e'[0],
b'r'[0],
0x01,
0x00,
b'M'[0],
0x04,
0x91,
0x06,
b'n'[0],
b'u'[0],
b'm'[0],
b'b'[0],
b'e'[0],
b'r'[0],
0xca,
0x00,
0x01,
0x00,
0x00,
0x00,
0xa0,
0x3f,
b'L'[0],
0x04,
0x91,
0x06,
b'n'[0],
b'u'[0],
b'm'[0],
b'b'[0],
b'e'[0],
b'r'[0],
0x01,
0x00,
]))
assert request == req_1, \
"Unexpected result from Multiple Request Service; got: \n%r\nvs.\n%r " % ( request, req_1 )
# Now, use the Message_Router's parser
source = cpppo.rememberable(request)
data = cpppo.dotdict()
with Obj.parser as machine:
for i, (m, s) in enumerate(machine.run(source=source, data=data)):
pass
log.normal("Multiple Request: %s", enip.enip_format(data))
assert 'multiple' in data, \
"No parsed multiple found in data: %s" % enip.enip_format( data )
assert data.service == enip.device.Message_Router.MULTIPLE_REQ, \
"Expected a Multiple Request Service request: %s" % enip.enip_format( data )
assert data.multiple.number == 5, \
"Expected 5 requests in request.multiple: %s" % enip.enip_format( data )
# And ensure if we re-encode the parsed result, we get the original encoded request back
assert Obj.produce(data) == req_1
# Process the request into a reply.
Obj.request(data)
log.normal("Multiple Response: %s", enip.enip_format(data))
assert data.service == enip.device.Message_Router.MULTIPLE_RPY, \
"Expected a Multiple Request Service reply: %s" % enip.enip_format( data )
rpy_1 = bytearray([
0x8A,
0x00,
0x00,
0x00,
0x05,
0x00,
0x0c,
0x00,
0x16,
0x00,
0x20,
0x00,
0x2a,
0x00,
0x2e,
0x00,
0xCC,
0x00,
0x00,
0x00,
0xC4,
0x00,
0x2A,
0x00,
0x00,
0x00,
0xCC,
0x00,
0x00,
0x00,
0xC4,
0x00,
0xDC,
0x01,
0x00,
0x00,
0xCC,
0x00,
0x00,
0x00,
0xCA,
0x00,
0x00,
0x00,
0x80,
0x3F,
0xcd,
0x00,
0x00,
0x00,
0xcc,
0x00,
0x00,
0x00,
0xca,
0x00,
0x00,
0x00,
0xa0,
0x3f,
])
assert data.input == rpy_1, \
"Unexpected reply from Multiple Request Service request; got: \n%r\nvs.\n%r " % ( data.input, rpy_1 )
# Now lets try some valid and invalid requests
data = cpppo.dotdict()
data.multiple = {}
data.multiple.request = req = [cpppo.dotdict()]
req[0].path = {
'segment': [cpppo.dotdict(d) for d in [{
'symbolic': 'SCADA_40001'
}]]
}
req[0].read_tag = {}
req[0].read_tag.elements = 1
data.multiple.number = len(data.multiple.request)
request = Obj.produce(data)
req_good = bytearray([
0x0A,
0x02,
0x20,
0x02,
ord('$'),
0x01,
0x01,
0x00,
0x04,
0x00,
0x4C,
0x07,
0x91,
0x0b,
ord('S'),
ord('C'),
ord('A'),
ord('D'),
ord('A'),
ord('_'),
ord('4'),
ord('0'),
ord('0'),
ord('0'),
ord('1'),
0x00,
0x01,
0x00,
])
assert request == req_good, \
"Unexpected result from Multiple Request Service request for SCADA_40001; got: \n%r\nvs.\n%r " % ( request, req_good )
Obj.request(data)
rpy_good = bytearray([
0x8A,
0x00,
0x00,
0x00,
0x01,
0x00,
0x04,
0x00,
0xCC,
0x00,
0x00,
0x00,
0xC3,
0x00,
0x00,
0x00,
])
assert data.input == rpy_good, \
"Unexpected reply from Multiple Request Service request for SCADA_40001; got: \n%r\nvs.\n%r " % ( data.input, rpy_good )
# Add an invalid request
data = cpppo.dotdict()
data.multiple = {}
data.multiple.request = req = [cpppo.dotdict(), cpppo.dotdict()]
req[0].path = {
'segment': [cpppo.dotdict(d) for d in [{
'symbolic': 'SCADA_40001'
}]]
}
req[0].read_tag = {}
req[0].read_tag.elements = 1
req[1].path = {
'segment': [cpppo.dotdict(d) for d in [{
'symbolic': 'SCADA_40002'
}]]
}
req[1].read_tag = {}
req[1].read_tag.elements = 1
data.multiple.number = len(data.multiple.request)
request = Obj.produce(data)
req_bad = bytearray([
0x0A,
0x02,
0x20,
0x02,
ord('$'),
0x01,
0x02,
0x00,
0x06,
0x00,
0x18,
0x00,
0x4C,
0x07,
0x91,
0x0b,
ord('S'),
ord('C'),
ord('A'),
ord('D'),
ord('A'),
ord('_'),
ord('4'),
ord('0'),
ord('0'),
ord('0'),
ord('1'),
0x00,
0x01,
0x00,
0x4C,
0x07,
0x91,
0x0b,
ord('S'),
ord('C'),
ord('A'),
ord('D'),
ord('A'),
ord('_'),
ord('4'),
ord('0'),
ord('0'),
ord('0'),
ord('2'),
0x00,
0x01,
0x00,
])
assert request == req_bad, \
"Unexpected result from Multiple Request Service request for SCADA_40001/2; got: \n%r\nvs.\n%r " % ( request, req_bad )
Obj.request(data)
rpy_bad = bytearray([
0x8A,
0x00,
0x00,
0x00,
0x02,
0x00,
0x06,
0x00,
0x0e,
0x00,
0xCC,
0x00,
0x00,
0x00,
0xC3,
0x00,
0x00,
0x00,
0xCC,
0x00,
0x05,
0x01, # Status code 0x05 (invalid path)
0x00,
0x00,
])
assert data.input == rpy_bad, \
"Unexpected reply from Multiple Request Service request for SCADA_40001/2; got: \n%r\nvs.\n%r " % ( data.input, rpy_bad )
"""python -m cpppo.server.enip.list_identity_simple <hostname>
Returns any List Identity responses from the given hostname or IP address (default:
255.255.255.255), received before timeout (default: 1.0 second) expires.
"""
from __future__ import print_function
import sys
from cpppo.server import enip
from cpppo.server.enip import client
timeout = 1.0
host = sys.argv[1] if sys.argv[1:] else '255.255.255.255'
with client.client( host=host, udp=True, broadcast=True ) as conn:
conn.list_identity( timeout=timeout )
while True:
response,elapsed= client.await( conn, timeout=timeout )
if response:
print( enip.enip_format( response ))
else:
break # No response (None) w'in timeout or EOF ({})
def test_logix_multiple():
"""Test the Multiple Request Service. Ensure multiple requests can be successfully handled, and
invalid tags are correctly rejected.
"""
size = 1000
Obj = logix.Logix()
Obj_a1 = Obj.attribute['1'] = enip.device.Attribute( 'parts', enip.parser.DINT, default=[n for n in range( size )])
Obj_a2 = Obj.attribute['2'] = enip.device.Attribute( 'ControlWord', enip.parser.DINT, default=[n for n in range( size )])
Obj_a3 = Obj.attribute['3'] = enip.device.Attribute( 'SCADA_40001', enip.parser.INT, default=[n for n in range( size )])
assert len( Obj_a1 ) == size
assert len( Obj_a2 ) == size
Obj_a1[0] = 42
Obj_a2[0] = 476
# Set up a symbolic tag referencing the Logix Object's Attribute
enip.device.symbol['parts'] = {'class': Obj.class_id, 'instance': Obj.instance_id, 'attribute':1 }
enip.device.symbol['ControlWord'] \
= {'class': Obj.class_id, 'instance': Obj.instance_id, 'attribute':2 }
enip.device.symbol['SCADA_40001'] \
= {'class': Obj.class_id, 'instance': Obj.instance_id, 'attribute':3 }
# Test that we correctly compute beg,end,endactual for various Read Tag Fragmented scenarios,
# with 2-byte and 4-byte types. For the purposes of this test, we only look at path...elements.
data = cpppo.dotdict()
data.service = Obj.RD_FRG_RPY
data.path = { 'segment': [ cpppo.dotdict( d )
for d in [
{'element': 0 },
]] }
data.read_frag = {}
data.read_frag.elements = 1000
data.read_frag.offset = 0
# Reply maximum size limited
beg,end,endactual = Obj.reply_elements( Obj_a1, data, 'read_frag' )
assert beg == 0 and end == 125 and endactual == 1000 # DINT == 4 bytes
beg,end,endactual = Obj.reply_elements( Obj_a3, data, 'read_frag' )
assert beg == 0 and end == 250 and endactual == 1000 # INT == 2 bytes
data.read_frag.offset = 125*4 # OK, second request; begin after byte offset of first
beg,end,endactual = Obj.reply_elements( Obj_a1, data, 'read_frag' )
assert beg == 125 and end == 250 and endactual == 1000 # DINT == 4 bytes
# Request elements limited; 0 offset
data.read_frag.elements = 30
data.read_frag.offset = 0
beg,end,endactual = Obj.reply_elements( Obj_a3, data, 'read_frag' )
assert beg == 0 and end == 30 and endactual == 30 # INT == 2 bytes
# Request elements limited; +'ve offset
data.read_frag.elements = 70
data.read_frag.offset = 80
beg,end,endactual = Obj.reply_elements( Obj_a3, data, 'read_frag' )
assert beg == 40 and end == 70 and endactual == 70 # INT == 2 bytes
# Request limited by size of data provided (Write Tag [Fragmented])
data = cpppo.dotdict()
data.service = Obj.WR_FRG_RPY
data.path = { 'segment': [ cpppo.dotdict( d )
for d in [
{'element': 0 },
]] }
data.write_frag = {}
data.write_frag.data = [0] * 100 # 100 elements provided in this request
data.write_frag.elements = 200 # Total request is to write 200 elements
data.write_frag.offset = 16 # request starts 16 bytes in (8 INTs)
beg,end,endactual = Obj.reply_elements( Obj_a3, data, 'write_frag' )
assert beg == 8 and end == 108 and endactual == 200 # INT == 2 bytes
# ... same, but lets say request started somewhere in the middle of the array
data.path = { 'segment': [ cpppo.dotdict( d )
for d in [
{'element': 222 },
]] }
beg,end,endactual = Obj.reply_elements( Obj_a3, data, 'write_frag' )
assert beg == 8+222 and end == 108+222 and endactual == 200+222 # INT == 2 bytes
# Ensure correct computation of (beg,end] that are byte-offset and data/size limited
data = cpppo.dotdict()
data.service = Obj.WR_FRG_RPY
data.path = { 'segment': [] }
data.write_frag = {}
data.write_frag.data = [3,4,5,6]
data.write_frag.offset = 6
beg,end,endactual = Obj.reply_elements( Obj_a3, data, 'write_frag' )
assert beg == 3 and end == 7 and endactual == 1000 # INT == 2 bytes
# Trigger the error cases only accessible via write
# Too many elements provided for attribute capacity
data.write_frag.offset = ( 1000 - 3 ) * 2
try:
beg,end,endactual = Obj.reply_elements( Obj_a3, data, 'write_frag' )
assert False, "Should have raised Exception due to capacity"
except Exception as exc:
assert "capacity exceeded" in str( exc )
data = cpppo.dotdict()
data.service = Obj.RD_FRG_RPY
data.path = { 'segment': [] }
data.read_frag = {}
data.read_frag.offset = 6
beg,end,endactual = Obj.reply_elements( Obj_a3, data, 'read_frag' )
assert beg == 3 and end == 253 and endactual == 1000 # INT == 2 bytes
# And we should be able to read with an offset right up to the last element
data.read_frag.offset = 1998
beg,end,endactual = Obj.reply_elements( Obj_a3, data, 'read_frag' )
assert beg == 999 and end == 1000 and endactual == 1000 # INT == 2 bytes
# Trigger all the remaining error cases
# Unknown service
data.service = Obj.RD_FRG_REQ
try:
beg,end,endactual = Obj.reply_elements( Obj_a3, data, 'read_frag' )
assert False, "Should have raised Exception due to service"
except Exception as exc:
assert "unknown service" in str( exc )
# Offset indivisible by element size
data.service = Obj.RD_FRG_RPY
data.read_frag.offset = 7
try:
beg,end,endactual = Obj.reply_elements( Obj_a3, data, 'read_frag' )
assert False, "Should have raised Exception due to odd byte offset"
except Exception as exc:
assert "element boundary" in str( exc )
# Initial element outside bounds
data.read_frag.offset = 2000
try:
beg,end,endactual = Obj.reply_elements( Obj_a3, data, 'read_frag' )
assert False, "Should have raised Exception due to initial element"
except Exception as exc:
assert "initial element invalid" in str( exc )
# Ending element outside bounds
data.read_frag.offset = 0
data.read_frag.elements = 1001
try:
beg,end,endactual = Obj.reply_elements( Obj_a3, data, 'read_frag' )
assert False, "Should have raised Exception due to ending element"
except Exception as exc:
assert "ending element invalid" in str( exc )
# Beginning element after ending (should be no way to trigger). This request doesn't specify an
# element in the path, hence defaults to element 0, and asks for a number of elements == 2.
# Thus, there is no 6-byte offset possible (a 2-byte offset is, though).
data.read_frag.offset = 6
data.read_frag.elements = 2
try:
beg,end,endactual = Obj.reply_elements( Obj_a3, data, 'read_frag' )
assert False, "Should have raised Exception due to ending element order"
except Exception as exc:
assert "ending element before beginning" in str( exc )
data.read_frag.offset = 2
data.read_frag.elements = 2
beg,end,endactual = Obj.reply_elements( Obj_a3, data, 'read_frag' )
assert beg == 1 and end == 2 and endactual == 2 # INT == 2 bytes
# Test an example valid multiple request
data = cpppo.dotdict()
data.multiple = {}
data.multiple.request = [ cpppo.dotdict(), cpppo.dotdict() ]
req = data.multiple.request
req[0].path = { 'segment': [ cpppo.dotdict( d )
for d in [{'symbolic': 'parts'}]] }
req[0].read_tag = {}
req[0].read_tag.elements = 1
req[1].path = { 'segment': [ cpppo.dotdict( d )
for d in [{'symbolic': 'ControlWord'}]] }
req[1].read_tag = {}
req[1].read_tag.elements = 1
request = Obj.produce( data )
req_1 = bytes(bytearray([
0x0A,
0x02,
0x20, 0x02, 0x24, 0x01,
0x02, 0x00,
0x06, 0x00,
0x12, 0x00,
0x4C,
0x04, 0x91, 0x05, 0x70, 0x61,
0x72, 0x74, 0x73, 0x00,
0x01, 0x00,
0x4C,
0x07, 0x91, 0x0B, 0x43, 0x6F,
0x6E, 0x74, 0x72, 0x6F, 0x6C,
0x57, 0x6F, 0x72, 0x64, 0x00,
0x01, 0x00,
]))
assert request == req_1, \
"Unexpected result from Multiple Request Service; got: \n%r\nvs.\n%r " % ( request, req_1 )
# Now, use the Message_Router's parser
source = cpppo.rememberable( request )
data = cpppo.dotdict()
with Obj.parser as machine:
for i,(m,s) in enumerate( machine.run( source=source, data=data )):
pass
log.normal( "Multiple Request: %s", enip.enip_format( data ))
assert 'multiple' in data, \
"No parsed multiple found in data: %s" % enip.enip_format( data )
assert data.service == device.Message_Router.MULTIPLE_REQ, \
"Expected a Multiple Request Service request: %s" % enip.enip_format( data )
assert data.multiple.number == 2, \
"Expected 2 requests in request.multiple: %s" % enip.enip_format( data )
# And ensure if we re-encode the parsed result, we get the original encoded request back
assert Obj.produce( data ) == req_1
# Process the request into a reply.
Obj.request( data )
log.normal( "Multiple Response: %s", enip.enip_format( data ))
assert data.service == device.Message_Router.MULTIPLE_RPY, \
"Expected a Multiple Request Service reply: %s" % enip.enip_format( data )
rpy_1 = bytearray([
0x8A,
0x00,
0x00,
0x00,
0x02, 0x00,
0x06, 0x00,
0x10, 0x00,
0xCC, 0x00, 0x00, 0x00,
0xC4, 0x00,
0x2A, 0x00, 0x00, 0x00,
0xCC, 0x00, 0x00, 0x00,
0xC4, 0x00,
0xDC, 0x01, 0x00, 0x00,
])
assert data.input == rpy_1, \
"Unexpected reply from Multiple Request Service request; got: \n%r\nvs.\n%r " % ( data.input, rpy_1 )
# Now lets try some valid and invalid requests
data = cpppo.dotdict()
data.multiple = {}
data.multiple.request = req = [ cpppo.dotdict() ]
req[0].path = { 'segment': [ cpppo.dotdict( d )
for d in [{'symbolic': 'SCADA_40001'}]] }
req[0].read_tag = {}
req[0].read_tag.elements = 1
data.multiple.number = len( data.multiple.request )
request = Obj.produce( data )
req_good = bytearray([
0x0A,
0x02,
0x20, 0x02, ord('$'), 0x01,
0x01, 0x00,
0x04, 0x00,
0x4C,
0x07, 0x91, 0x0b, ord('S'), ord('C'),
ord('A'), ord('D'), ord('A'), ord('_'), ord('4'),
ord('0'), ord('0'), ord('0'), ord('1'), 0x00,
0x01, 0x00,
])
assert request == req_good, \
"Unexpected result from Multiple Request Service request for SCADA_40001; got: \n%r\nvs.\n%r " % ( request, req_good )
Obj.request( data )
rpy_good = bytearray([
0x8A,
0x00,
0x00,
0x00,
0x01, 0x00,
0x04, 0x00,
0xCC, 0x00, 0x00, 0x00,
0xC3, 0x00,
0x00, 0x00,
])
assert data.input == rpy_good, \
"Unexpected reply from Multiple Request Service request for SCADA_40001; got: \n%r\nvs.\n%r " % ( data.input, rpy_good )
# Add an invalid request
data = cpppo.dotdict()
data.multiple = {}
data.multiple.request = req = [ cpppo.dotdict(), cpppo.dotdict() ]
req[0].path = { 'segment': [ cpppo.dotdict( d )
for d in [{'symbolic': 'SCADA_40001'}]] }
req[0].read_tag = {}
req[0].read_tag.elements = 1
req[1].path = { 'segment': [ cpppo.dotdict( d )
for d in [{'symbolic': 'SCADA_40002'}]] }
req[1].read_tag = {}
req[1].read_tag.elements = 1
data.multiple.number = len( data.multiple.request )
request = Obj.produce( data )
req_bad = bytearray([
0x0A,
0x02,
0x20, 0x02, ord('$'), 0x01,
0x02, 0x00,
0x06, 0x00,
0x18, 0x00,
0x4C,
0x07, 0x91, 0x0b, ord('S'), ord('C'),
ord('A'), ord('D'), ord('A'), ord('_'), ord('4'),
ord('0'), ord('0'), ord('0'), ord('1'), 0x00,
0x01, 0x00,
0x4C,
0x07, 0x91, 0x0b, ord('S'), ord('C'),
ord('A'), ord('D'), ord('A'), ord('_'), ord('4'),
ord('0'), ord('0'), ord('0'), ord('2'), 0x00,
0x01, 0x00,
])
assert request == req_bad, \
"Unexpected result from Multiple Request Service request for SCADA_40001/2; got: \n%r\nvs.\n%r " % ( request, req_bad )
Obj.request( data )
rpy_bad = bytearray([
0x8A,
0x00,
0x00,
0x00,
0x02, 0x00,
0x06, 0x00,
0x0e, 0x00,
0xCC, 0x00, 0x00, 0x00,
0xC3, 0x00,
0x00, 0x00,
0xCC, 0x00, 0x05, 0x01, # Status code 0x05 (invalid path)
0x00, 0x00,
])
assert data.input == rpy_bad, \
"Unexpected reply from Multiple Request Service request for SCADA_40001/2; got: \n%r\nvs.\n%r " % ( data.input, rpy_bad )
def main(argv=None):
"""Read the specified tag(s). Pass the desired argv (excluding the program
name in sys.arg[0]; typically pass argv=None, which is equivalent to
argv=sys.argv[1:], the default for argparse. Requires at least one tag to
be defined.
"""
ap = argparse.ArgumentParser(
description="An EtherNet/IP Client",
formatter_class=argparse.RawDescriptionHelpFormatter,
epilog="""\
One or more EtherNet/IP CIP Tags may be read or written. The full format for
specifying a tag and an operation is:
Tag[<first>-<last>]+<offset>=(SINT|INT|DINT|REAL)<value>,<value>
All components except Tag are optional. Specifying a +<offset> (in bytes)
forces the use of the Fragmented command, regardless of whether --[no-]fragment
was specified. If an element range [<first>] or [<first>-<last>] was specified
and --no-fragment selected, then the exact correct number of elements must be
provided.""",
)
ap.add_argument("-v", "--verbose", default=0, action="count", help="Display logging information.")
ap.add_argument(
"-a",
"--address",
default=("%s:%d" % enip.address),
help="EtherNet/IP interface[:port] to connect to (default: %s:%d)" % (enip.address[0], enip.address[1]),
)
ap.add_argument("-p", "--print", default=False, action="store_true", help="Print a summary of operations to stdout")
ap.add_argument("-l", "--log", help="Log file, if desired")
ap.add_argument("-t", "--timeout", default=5.0, help="EtherNet/IP timeout (default: 5s)")
ap.add_argument("-r", "--repeat", default=1, help="Repeat EtherNet/IP request (default: 1)")
ap.add_argument(
"-m", "--multiple", action="store_true", help="Use Multiple Service Packet request (default: False)"
)
ap.add_argument(
"-f",
"--fragment",
dest="fragment",
action="store_true",
help="Use Read/Write Tag Fragmented requests (default: True)",
)
ap.add_argument(
"-n",
"--no-fragment",
dest="fragment",
action="store_false",
help="Use Read/Write Tag requests (default: False)",
)
ap.set_defaults(fragment=False)
ap.add_argument("tags", nargs="+", help="Tags to read/write, eg: SCADA[1], SCADA[2-10]+4=(DINT)3,4,5")
args = ap.parse_args(argv)
addr = args.address.split(":")
assert 1 <= len(addr) <= 2, "Invalid --address [<interface>]:[<port>}: %s" % args.address
addr = (
str(addr[0]) if addr[0] else enip.address[0],
int(addr[1]) if len(addr) > 1 and addr[1] else enip.address[1],
)
# Set up logging level (-v...) and --log <file>
levelmap = {0: logging.WARNING, 1: logging.NORMAL, 2: logging.DETAIL, 3: logging.INFO, 4: logging.DEBUG}
cpppo.log_cfg["level"] = levelmap[args.verbose] if args.verbose in levelmap else logging.DEBUG
if args.log:
cpppo.log_cfg["filename"] = args.log
logging.basicConfig(**cpppo.log_cfg)
timeout = float(args.timeout)
repeat = int(args.repeat)
begun = misc.timer()
cli = client(host=addr[0], port=addr[1])
assert cli.writable(timeout=timeout)
elapsed = misc.timer() - begun
log.normal("Client Connected in %7.3f/%7.3fs" % (elapsed, timeout))
# Register, and harvest EtherNet/IP Session Handle
begun = misc.timer()
request = cli.register(timeout=timeout)
elapsed = misc.timer() - begun
log.detail("Client Register Sent %7.3f/%7.3fs: %s" % (elapsed, timeout, enip.enip_format(request)))
data = None # In case nothing is returned by cli iterable
for data in cli:
elapsed = misc.timer() - begun
log.info("Client Register Resp %7.3f/%7.3fs: %s" % (elapsed, timeout, enip.enip_format(data)))
if data is None:
if elapsed <= timeout:
cli.readable(timeout=timeout - elapsed)
continue
break
elapsed = misc.timer() - begun
log.detail("Client Register Rcvd %7.3f/%7.3fs: %s" % (elapsed, timeout, enip.enip_format(data)))
assert data is not None, "Failed to receive any response"
assert "enip.status" in data, "Failed to receive EtherNet/IP response"
assert data.enip.status == 0, "EtherNet/IP response indicates failure: %s" % data.enip.status
assert "enip.CIP.register" in data, "Failed to receive Register response"
cli.session = data.enip.session_handle
# Parse each EtherNet/IP Tag Read or Write; only write operations will have 'data'
# TAG read 1 value (no element index)
# TAG[0] read 1 value from element index 0
# TAG[1-5] read 5 values from element indices 1 to 5
# TAG[1-5]+4 read 5 values from element indices 1 to 5, beginning at byte offset 4
# TAG[4-7]=1,2,3,4 write 4 values from indices 4 to 7
#
# To support access to scalar attributes (no element index allowed in path), we cannot default
# to supply an element index of 0; default is no element in path, and a data value count of 1.
# If a byte offset is specified, the request is forced to use Read/Write Tag Fragmented
# (regardless of whether --[no-]fragment was specified)
operations = []
for tag in args.tags:
# Compute tag, elm, end and cnt (default elm is None (no element index), cnt is 1)
val = ""
off = None
elm, lst = None, None
cnt = 1
if "=" in tag:
# A write; strip off the values into 'val'
tag, val = tag.split("=", 1)
if "+" in tag:
# A byte offset (valid for Fragmented)
tag, off = tag.split("+", 1)
if "[" in tag:
tag, elm = tag.split("[", 1)
elm, _ = elm.split("]")
lst = elm
if "-" in elm:
elm, lst = elm.split("-")
elm, lst = int(elm), int(lst)
cnt = lst + 1 - elm
opr = {}
opr["path"] = [{"symbolic": tag}]
if elm is not None:
opr["path"] += [{"element": elm}]
opr["elements"] = cnt
if off:
opr["offset"] = int(off)
if val:
if "." in val:
opr["tag_type"] = enip.REAL.tag_type
size = enip.REAL().calcsize
cast = lambda x: float(x)
else:
opr["tag_type"] = enip.INT.tag_type
size = enip.INT().calcsize
cast = lambda x: int(x)
# Allow an optional (TYPE)value,value,...
if ")" in val:
def int_validate(x, lo, hi):
res = int(x)
assert lo <= res <= hi, "Invalid %d; not in range (%d,%d)" % (res, lo, hi)
return res
typ, val = val.split(")")
_, typ = typ.split("(")
opr["tag_type"], size, cast = {
"REAL": (enip.REAL.tag_type, enip.REAL().calcsize, lambda x: float(x)),
"DINT": (
enip.DINT.tag_type,
enip.DINT().calcsize,
lambda x: int_validate(x, -2 ** 31, 2 ** 31 - 1),
),
"INT": (enip.INT.tag_type, enip.INT().calcsize, lambda x: int_validate(x, -2 ** 15, 2 ** 15 - 1)),
"SINT": (enip.SINT.tag_type, enip.SINT().calcsize, lambda x: int_validate(x, -2 ** 7, 2 ** 7 - 1)),
}[typ.upper()]
opr["data"] = list(map(cast, val.split(",")))
if "offset" not in opr and not args.fragment:
# Non-fragment write. The exact correct number of data elements must be provided
assert len(opr["data"]) == cnt, "Number of data values (%d) doesn't match element count (%d): %s=%s" % (
len(opr["data"]),
cnt,
tag,
val,
)
elif elm != lst:
# Fragmented write, to an identified range of indices, hence we can check length.
# If the byte offset + data provided doesn't match the number of elements, then a
# subsequent Write Tag Fragmented command will be required to write the balance.
byte = opr.get("offset") or 0
assert byte % size == 0, "Invalid byte offset %d for elements of size %d bytes" % (byte, size)
beg = byte // size
end = beg + len(opr["data"])
assert end <= cnt, (
"Number of elements (%d) provided and byte offset %d / %d-byte elements exceeds element count %d: "
% (len(opr["data"]), byte, size, cnt)
)
if beg != 0 or end != cnt:
log.normal("Partial Write Tag Fragmented; elements %d-%d of %d", beg, end - 1, cnt)
operations.append(opr)
def output(out):
log.normal(out)
if args.print:
print(out)
# Perform all specified tag operations, the specified number of repeat times. Doesn't handle
# fragmented reads yet. If any operation fails, return a non-zero exit status. If --multiple
# specified, perform all operations in a single Multiple Service Packet request.
status = 0
start = misc.timer()
for i in range(repeat):
requests = [] # If --multiple, collects all requests, else one at at time
for o in range(len(operations)):
op = operations[o] # {'path': [...], 'elements': #}
begun = misc.timer()
if "offset" not in op:
op["offset"] = 0 if args.fragment else None
if "data" in op:
descr = "Write "
req = cli.write(timeout=timeout, send=not args.multiple, **op)
else:
descr = "Read "
req = cli.read(timeout=timeout, send=not args.multiple, **op)
descr += "Frag" if op["offset"] is not None else "Tag "
if args.multiple:
# Multiple requests; each request is returned simply, not in an Unconnected Send
requests.append(req)
if o != len(operations) - 1:
continue
# No more operations! Issue the Multiple Service Packet containing all operations
descr = "Multiple "
cli.multiple(request=requests, timeout=timeout)
else:
# Single request issued
requests = [req]
# Issue the request(s), and get the response
elapsed = misc.timer() - begun
log.detail("Client %s Sent %7.3f/%7.3fs: %s" % (descr, elapsed, timeout, enip.enip_format(request)))
response = None
for response in cli:
elapsed = misc.timer() - begun
log.debug("Client %s Resp %7.3f/%7.3fs: %s" % (descr, elapsed, timeout, enip.enip_format(response)))
if response is None:
if elapsed <= timeout:
cli.readable(timeout=timeout - elapsed)
continue
break
elapsed = misc.timer() - begun
log.detail("Client %s Rcvd %7.3f/%7.3fs: %s" % (descr, elapsed, timeout, enip.enip_format(response)))
# Find the replies in the response; could be single or multiple; should match requests!
replies = []
if response.enip.status != 0:
status = 1
output("Client %s Response EtherNet/IP status: %d" % (descr, response.enip.status))
elif (
args.multiple and "enip.CIP.send_data.CPF.item[1].unconnected_send.request.multiple.request" in response
):
# Multiple Service Packet; request.multiple.request is an array of read/write_tag/frag
replies = response.enip.CIP.send_data.CPF.item[1].unconnected_send.request.multiple.request
elif "enip.CIP.send_data.CPF.item[1].unconnected_send.request" in response:
# Single request; request is a read/write_tag/frag
replies = [response.enip.CIP.send_data.CPF.item[1].unconnected_send.request]
else:
status = 1
output("Client %s Response Unrecognized: " % (descr, enip.enip_format(response)))
for request, reply in zip(requests, replies):
log.detail("Client %s Request: %s", descr, enip.enip_format(request))
log.detail(" Yields Reply: %s", enip.enip_format(reply))
val = [] # data values read/written
res = None # result of request
act = "??" # denotation of request action
try:
tag = request.path.segment[0].symbolic
try:
elm = request.path.segment[1].element # array access
except IndexError:
elm = None # scalar access
# The response should contain either an status code (possibly with an extended
# status), or the read_frag request's data. Remember; a successful response may
# carry read_frag.data, but report a status == 6 indicating that more data remains
# to return via a subsequent fragmented read request.
if "read_frag" in reply:
act = "=="
val = reply.read_frag.data
cnt = request.read_frag.elements
elif "read_tag" in reply:
act = "=="
val = reply.read_tag.data
cnt = request.read_tag.elements
elif "write_frag" in reply:
act = "<="
val = request.write_frag.data
cnt = request.write_frag.elements
elif "write_tag" in reply:
act = "<="
val = request.write_tag.data
cnt = request.write_tag.elements
if not reply.status:
res = "OK"
else:
res = "Status %d %s" % (
reply.status,
repr(reply.status_ext.data) if "status_ext" in reply and reply.status_ext.size else "",
)
if reply.status:
if not status:
status = reply.status
log.warning("Client %s returned non-zero status: %s", descr, res)
except AttributeError as exc:
status = 1
res = "Client %s Response missing data: %s" % (descr, exc)
log.detail("%s: %s", res, "".join(traceback.format_exception(*sys.exc_info())))
except Exception as exc:
status = 1
res = "Client %s Exception: %s" % (descr, exc)
log.detail("%s: %s", res, "".join(traceback.format_exception(*sys.exc_info())))
if elm is None:
output("%20s %s %r: %r" % (tag, act, val, res)) # scalar access
else:
output("%20s[%5d-%-5d] %s %r: %r" % (tag, elm, elm + cnt - 1, act, val, res))
duration = misc.timer() - start
log.normal(
"Client Tag I/O Average %7.3f TPS (%7.3fs ea)."
% (repeat * len(operations) / duration, duration / repeat / len(operations))
)
return status
def main( argv=None ):
"""Read the specified tag(s). Pass the desired argv (excluding the program
name in sys.arg[0]; typically pass argv=None, which is equivalent to
argv=sys.argv[1:], the default for argparse. Requires at least one tag to
be defined.
"""
ap = argparse.ArgumentParser(
description = "An EtherNet/IP Client",
epilog = "" )
ap.add_argument( '-v', '--verbose',
default=0, action="count",
help="Display logging information." )
ap.add_argument( '-a', '--address',
default=( "%s:%d" % enip.address ),
help="EtherNet/IP interface[:port] to connect to (default: %s:%d)" % (
enip.address[0], enip.address[1] ))
ap.add_argument( '-l', '--log',
help="Log file, if desired" )
ap.add_argument( '-t', '--timeout',
default=5.0,
help="EtherNet/IP timeout (default: 5s)" )
ap.add_argument( '-r', '--repeat',
default=1,
help="Repeat EtherNet/IP request (default: 1)" )
ap.add_argument( 'tags', nargs="+",
help="Any tags to read/write, eg: SCADA[1]")
args = ap.parse_args( argv )
addr = args.address.split(':')
assert 1 <= len( addr ) <= 2, "Invalid --address [<interface>]:[<port>}: %s" % args.address
addr = ( str( addr[0] ) if addr[0] else enip.address[0],
int( addr[1] ) if len( addr ) > 1 and addr[1] else enip.address[1] )
# Set up logging level (-v...) and --log <file>
levelmap = {
0: logging.WARNING,
1: logging.NORMAL,
2: logging.DETAIL,
3: logging.INFO,
4: logging.DEBUG,
}
cpppo.log_cfg['level'] = ( levelmap[args.verbose]
if args.verbose in levelmap
else logging.DEBUG )
if args.log:
cpppo.log_cfg['filename'] = args.log
logging.basicConfig( **cpppo.log_cfg )
timeout = float( args.timeout )
repeat = int( args.repeat )
begun = misc.timer()
cli = client( host=addr[0], port=addr[1] )
assert cli.writable( timeout=timeout )
elapsed = misc.timer() - begun
log.normal( "Client Connected in %7.3f/%7.3fs" % ( elapsed, timeout ))
# Register, and harvest EtherNet/IP Session Handle
begun = misc.timer()
request = cli.register( timeout=timeout )
elapsed = misc.timer() - begun
log.normal( "Client Register Sent %7.3f/%7.3fs: %s" % ( elapsed, timeout, enip.enip_format( request )))
data = None # In case nothing is returned by cli iterable
for data in cli:
elapsed = misc.timer() - begun
log.detail( "Client Register Resp %7.3f/%7.3fs: %s" % ( elapsed, timeout, enip.enip_format( data )))
if data is None:
if elapsed <= timeout:
cli.readable( timeout=timeout - elapsed )
continue
break
elapsed = misc.timer() - begun
log.normal( "Client Register Rcvd %7.3f/%7.3fs: %s" % ( elapsed, timeout, enip.enip_format( data )))
assert data is not None, "Failed to receive any response"
assert 'enip.status' in data, "Failed to receive EtherNet/IP response"
assert data.enip.status == 0, "EtherNet/IP response indicates failure: %s" % data.enip.status
assert 'enip.CIP.register' in data, "Failed to receive Register response"
cli.session = data.enip.session_handle
# Parse each EtherNet/IP Tag Read or Write; only write operations will have 'data'
# TAG[0] read 1 value index 0 (default)
# TAG[1-5] read 5 values from indices 1 to 5
# TAG[4-7]=1,2,3,4 write 4 values from indices 4 to 7
operations = []
for tag in args.tags:
# Compute tag, elm, end and cnt (default elm is 0, cnt is 1)
val = ''
if '=' in tag:
tag,val = tag.split( '=', 1 )
if '[' in tag:
tag,elm = tag.split( '[', 1 )
elm,_ = elm.split( ']' )
end = elm
if '-' in elm:
elm,end = elm.split( '-' )
elm,end = int(elm), int(end)
else:
elm,end = 0,0
cnt = end + 1 - elm
opr = {
'path': [{'symbolic': tag}, {'element': elm}],
'elements': cnt,
}
if val:
if '.' in val:
opr['tag_type'] = enip.REAL.tag_type
cast = lambda x: float( x )
else:
opr['tag_type'] = enip.INT.tag_type
cast = lambda x: int( x )
# Allow an optional (TYPE)value,value,...
if ')' in val:
def int_validate( x, lo, hi ):
res = int( x )
assert lo <= res <= hi, "Invalid %d; not in range (%d,%d)" % ( res, lo, hi)
return res
typ,val = val.split( ')' )
_,typ = typ.split( '(' )
opr['tag_type'],cast = {
'REAL': (enip.REAL.tag_type, lambda x: float( x )),
'DINT': (enip.DINT.tag_type, lambda x: int_validate( x, -2**31, 2**31-1 )),
'INT': (enip.INT.tag_type, lambda x: int_validate( x, -2**15, 2**15-1 )),
'SINT': (enip.SINT.tag_type, lambda x: int_validate( x, -2**7, 2**7-1 )),
}[typ.upper()]
opr['data'] = list( map( cast, val.split( ',' )))
assert len( opr['data'] ) == cnt, \
"Number of data values (%d) doesn't match element count (%d): %s=%s" % (
len( opr['data'] ), cnt, tag, val )
operations.append( opr )
# Perform all specified tag operations, the specified number of repeat times. Doesn't handle
# fragmented reads yet. If any operation fails, return a non-zero exit status.
status = 0
start = misc.timer()
for i in range( repeat ):
for op in operations: # {'path': [...], 'elements': #}
begun = misc.timer()
if 'data' in op:
descr = "Write Frag"
request = cli.write( offset=0, timeout=timeout, **op )
else:
descr = "Read Frag"
request = cli.read( offset=0, timeout=timeout, **op )
elapsed = misc.timer() - begun
log.normal( "Client %s Sent %7.3f/%7.3fs: %s" % ( descr, elapsed, timeout, enip.enip_format( request )))
response = None
for response in cli:
elapsed = misc.timer() - begun
log.normal( "Client %s Resp %7.3f/%7.3fs: %s" % ( descr, elapsed, timeout, enip.enip_format( response )))
if response is None:
if elapsed <= timeout:
cli.readable( timeout=timeout - elapsed )
continue
break
elapsed = misc.timer() - begun
log.normal( "Client %s Rcvd %7.3f/%7.3fs: %s" % ( descr, elapsed, timeout, enip.enip_format( response )))
tag = op['path'][0]['symbolic']
elm = op['path'][1]['element']
cnt = op['elements']
val = [] # data values read/written
res = None # result of request
act = "??" # denotation of request action
try:
# The response should contain either an status code (possibly with an extended
# status), or the read_frag request's data. Remember; a successful response may
# carry read_frag.data, but report a status == 6 indicating that more data remains
# to return via a subsequent fragmented read request.
request = response.enip.CIP.send_data.CPF.item[1].unconnected_send.request
if 'read_frag' in request:
act = "=="
val = request.read_frag.data
elif 'write_frag' in request:
act = "<="
val = op['data']
if not request.status:
res = "OK"
else:
res = "Status %d %s" % ( request.status,
repr( request.status_ext.data ) if 'status_ext' in request and request.status_ext.size else "" )
if request.status:
if not status:
status = request.status
log.warning( "Client %s returned non-zero status: %s", descr, res )
except AttributeError as exc:
status = 1
res = "Client %s Response missing data: %s" % ( descr, exc )
except Exception as exc:
status = 1
res = "Client %s Exception: %s" % exc
log.warning( "%10s[%5d-%-5d] %s %r: %r" % ( tag, elm, elm + cnt - 1, act, val, res ))
duration = misc.timer() - start
log.warning( "Client ReadFrg. Average %7.3f TPS (%7.3fs ea)." % ( repeat / duration, duration / repeat ))
return status
def test_CIP_HART(repeat=1):
"""HART protocol enip CIP messages
"""
enip.lookup_reset() # Flush out any existing CIP Objects for a fresh start
ENIP = enip.enip_machine(context='enip')
CIP = enip.CIP()
# We'll use a HART Message Router, to handle its expanded porfolio of commands
MR = HART(instance_id=1)
for pkt, tst in client.recycle(CIP_HART_tests, times=repeat):
# Parse just the CIP portion following the EtherNet/IP encapsulation header
data = cpppo.dotdict()
source = cpppo.chainable(pkt)
with ENIP as machine:
for i, (m, s) in enumerate(machine.run(source=source, data=data)):
log.detail("%s #%3d -> %10.10s; next byte %3d: %-10.10r: %r",
machine.name_centered(), i, s, source.sent,
source.peek(), data)
# In a real protocol implementation, an empty header (EOF with no input at all) is
# acceptable; it indicates a session closed by the client.
if not data:
log.normal("EtherNet/IP Request: Empty (session terminated): %s",
enip.enip_format(data))
continue
if log.isEnabledFor(logging.NORMAL):
log.normal("EtherNet/IP Request: %s", enip.enip_format(data))
# Parse the encapsulated .input
with CIP as machine:
for i, (m, s) in enumerate(
machine.run(path='enip',
source=cpppo.peekable(
data.enip.get('input', b'')),
data=data)):
log.detail("%s #%3d -> %10.10s; next byte %3d: %-10.10r: %r",
machine.name_centered(), i, s, source.sent,
source.peek(), data)
if log.isEnabledFor(logging.NORMAL):
log.normal("EtherNet/IP CIP Request: %s", enip.enip_format(data))
# Assume the request in the CIP's CPF items are HART requests.
# Now, parse the encapsulated message(s). We'll assume it is destined for a HART Object.
if 'enip.CIP.send_data' in data:
for item in data.enip.CIP.send_data.CPF.item:
if 'unconnected_send.request' in item:
# An Unconnected Send that contained an encapsulated request (ie. not just a Get
# Attribute All)
with MR.parser as machine:
if log.isEnabledFor(logging.NORMAL):
log.normal(
"Parsing %3d bytes using %s.parser, from %s",
len(item.unconnected_send.request.input), MR,
enip.enip_format(item))
# Parse the unconnected_send.request.input octets, putting parsed items into the
# same request context
for i, (m, s) in enumerate(
machine.run(
source=cpppo.peekable(
item.unconnected_send.request.input),
data=item.unconnected_send.request)):
log.detail(
"%s #%3d -> %10.10s; next byte %3d: %-10.10r: %r",
machine.name_centered(), i, s, source.sent,
source.peek(), data)
# Post-processing of some parsed items is only performed after lock released!
if log.isEnabledFor(logging.NORMAL):
log.normal(
"Parsed %3d bytes using %s.parser, into %s",
len(item.unconnected_send.request.input), MR,
enip.enip_format(data))
try:
for k, v in tst.items():
assert data[k] == v, ("data[%r] == %r\n"
"expected: %r" % (k, data[k], v))
except:
log.warning("%r not in data, or != %r: %s", k, v,
enip.enip_format(data))
raise
# Ensure that we can get the original EtherNet/IP CIP back
for k in list(data.keys()):
if k.endswith('input') and 'sender_context' not in k:
log.detail("del data[%r]", k)
del data[k]
try:
# First reconstruct any SendRRData CPF items, containing encapsulated requests/responses
if 'enip.CIP.send_data' in data:
cpf = data.enip.CIP.send_data
for item in cpf.CPF.item:
if 'unconnected_send' in item:
item.unconnected_send.request.input = bytearray(
MR.produce(item.unconnected_send.request))
log.normal("Produce HART message from: %r",
item.unconnected_send.request)
# Next, reconstruct the CIP Register, ListIdentity, ListServices, or SendRRData. The CIP.produce must
# be provided the EtherNet/IP header, because it contains data (such as .command)
# relevant to interpreting the .CIP... contents.
data.enip.input = bytearray(enip.CIP.produce(data.enip))
# And finally the EtherNet/IP encapsulation itself
data.input = bytearray(enip.enip_encode(data.enip))
log.detail("EtherNet/IP CIP Request produced payload: %r",
bytes(data.input))
assert data.input == pkt, "original:\n" + hexdump(
pkt) + "\nproduced:\n" + hexdump(data.input)
except Exception as exc:
log.warning(
"Exception %s; Invalid packet produced from EtherNet/IP CIP data: %s",
exc, enip.enip_format(data))
raise
def test_hart_pass_thru_poll(simulated_hart_gateway):
r"""To test a remote C*Logix w/ a HART card, set up a remote port forward from another host in the
same LAN. Here's a windows example, using putty. This windows machine (at 100.100.102.1)
forwards a port 44818 on fat2.kundert.ca, to the PLC at 100.100.102.10:44818:
C:\Users\Engineer\Desktop\putty.exe -R 44818:100.100.102.10:44818 [email protected]
Now, from another host that can see fat2.kundert.ca:
$ python -m cpppo.server.enip.list_services --list-identity -a fat2.kundert.ca:44818
{
"peer": [
"fat2.kundert.ca",
44818
],
...
"enip.status": 0,
"enip.CIP.list_services.CPF.count": 1,
"enip.CIP.list_services.CPF.item[0].communications_service.capability": 288,
"enip.CIP.list_services.CPF.item[0].communications_service.service_name": "Communications",
}
{
...
"enip.status": 0,
"enip.CIP.list_identity.CPF.item[0].identity_object.sin_addr": "100.100.102.10",
"enip.CIP.list_identity.CPF.item[0].identity_object.status_word": 96,
"enip.CIP.list_identity.CPF.item[0].identity_object.vendor_id": 1,
"enip.CIP.list_identity.CPF.item[0].identity_object.product_name": "1756-EN2T/D",
"enip.CIP.list_identity.CPF.item[0].identity_object.sin_port": 44818,
"enip.CIP.list_identity.CPF.item[0].identity_object.state": 3,
"enip.CIP.list_identity.CPF.item[0].identity_object.version": 1,
"enip.CIP.list_identity.CPF.item[0].identity_object.device_type": 12,
"enip.CIP.list_identity.CPF.item[0].identity_object.sin_family": 2,
"enip.CIP.list_identity.CPF.item[0].identity_object.serial_number": 11866067,
"enip.CIP.list_identity.CPF.item[0].identity_object.product_code": 166,
"enip.CIP.list_identity.CPF.item[0].identity_object.product_revision": 1802,
}
"""
command, address = simulated_hart_gateway
# For testing, we'll hit a specific device
#address = ("fat2.kundert.ca", 44818)
#address = ("100.100.102.10", 44818)
#address = ("localhost", 44818)
route_path = None
route_path = [{'link': 2, 'port': 1}]
try:
assert address, "Unable to detect HART EtherNet/IP CIP Gateway IP address"
#hio = client.implicit( host=address[0], port=address[1] )
hio = client.connector(host=address[0], port=address[1])
# Just get the primary variable, to see if the HART device is there.
operations = [
{
"method": "service_code",
"code": HART.RD_VAR_REQ,
"data": [], # No payload
"data_size":
4 + 36, # Known response size: command,status,<payload>
"path": '@0x%X/8' %
(HART.class_id), # Instance 1-8 ==> HART Channel 0-7
"route_path": route_path,
},
]
with hio:
for idx, dsc, req, rpy, sts, val in hio.pipeline(
operations=client.parse_operations(operations),
**hart_kwds):
log.normal("Client %s: %s --> %r: %s", hio, dsc, val,
enip.enip_format(rpy))
path = '@0x%X/8' % (HART.class_id)
data = hart_pass_thru(hio,
path=path,
hart_data=[1, 0],
route_path=route_path,
data_size=4) # with no size
# The small response carries the 4-byte value, the long CIP MSG response additionally
# carries the data type We receive the long response.
value = None
if data and len(data) >= 4:
units = data[0] if len(data) > 4 else None
packer = struct.Struct(enip.REAL_network.struct_format)
value, = packer.unpack_from(buffer=bytearray(data[-4:]))
log.normal("Read primary variable Value: %s (units: %s), from: %r",
value, units, data)
# HART Command 3 gets all 4 variables
data = hart_pass_thru(hio,
path=path,
hart_data=[3, 0],
route_path=route_path,
data_size=4 * 4) # with no size
# small response carries PV, SV, TV, FV values, no data types
value = []
if data and len(data) == 4 * 4:
# Short
packer = struct.Struct(enip.REAL_network.struct_format)
for i in range(0, len(data), 4):
value += packer.unpack_from(buffer=bytearray(data[i:i + 4]))
elif data and len(data) >= 24:
# Long
packer = struct.Struct(enip.REAL_network.struct_format)
value = cpppo.dotdict()
value.current, = packer.unpack_from(buffer=bytearray(data[0:]))
value.PV_units = data[4]
value.PV, = packer.unpack_from(buffer=bytearray(data[5:]))
value.SV_units = data[10]
value.SV, = packer.unpack_from(buffer=bytearray(data[11:]))
value.TV_units = data[14]
value.TV, = packer.unpack_from(buffer=bytearray(data[15:]))
value.FV_units = data[19]
value.FV, = packer.unpack_from(buffer=bytearray(data[20:]))
log.normal("Read all variables Values: %s, from: %r",
enip.enip_format(value), data)
# HART Command 12 gets the 24-character Message
data = hart_pass_thru(hio,
path=path,
hart_data=[12, 0],
route_path=route_path,
data_size=4 * 4) # with no size
value = None
if data and len(data):
try:
value = bytes(data).decode('ascii')
except:
value = hexdump(data)
log.normal("Read Message: \n%s\nfrom: %r", value, data)
# HART Command 0 gets the identity
data = hart_pass_thru(hio,
path=path,
hart_data=[0, 0],
route_path=route_path,
data_size=4 * 4) # with no size
value = None
if data and len(data):
value = hexdump(data)
log.normal("Read Identity: \n%s\nfrom: %r", value, data)
# HART Command 13 gets the Tag
data = hart_pass_thru(hio,
path=path,
hart_data=[13, 0],
route_path=route_path,
data_size=4 * 4) # with no size
value = None
if data and len(data):
value = hexdump(data)
log.normal("Read Tag: \n%s\nfrom: %r", value, data)
except Exception as exc:
log.warning("Test terminated with exception: %s", exc)
raise
def hart_pass_thru(io, path, hart_data, data_size, route_path=None):
"""For eg. hart_data=[1, 0], data_size=4 for HART command 1. Returns None on failure, or the HART
command response data payload.
Harvests a Pass-thru Init handle, and issues Query on it 'til successs.
"""
# Try to start the Pass-thru command, with the Pass-thru Init, and get handle
operations = [
{
"method": "service_code",
"code": HART.PT_INI_REQ,
"data": hart_data,
"data_size":
4 + 2, # Known response size: command,status,<payload>
"path": path, # Instance 1-8 ==> HART Channel 0-7
"route_path": route_path,
},
]
# Look for a reply init.status of 33 initiated. Actually, it appears that status 0 indicates success.
handle = None
while handle is None:
time.sleep(.1)
with io:
for idx, dsc, req, rpy, sts, val in io.pipeline(
operations=client.parse_operations(operations),
**hart_kwds):
log.detail("Client %s: %s --> %r: request: %s\nreply:%s", io,
dsc, val, enip.enip_format(req),
enip.enip_format(rpy))
if rpy.status == 0 and rpy.init.status in (
33, ): # 32 busy, 33 initiated, 35 device offline
handle = rpy.init.handle
log.normal("HART Pass-thru command Handle: %s", handle)
# Query for success/failure (loop on running)
operations = [
{
"method": "service_code",
"code": HART.PT_QRY_REQ,
"data": [handle], # HART: Pass-thru Query handle
"data_size": 4 +
data_size, # Known response size: 5 (units + 4-byte real in network order)
"path": path, # Instance 1-8 ==> HART Channel 0-7
"route_path": route_path,
},
]
reply = {}
while not reply or (reply.status == 0 and reply.query.status
== 34): # 0 success, 34 running, 35 dead
time.sleep(.1)
with io:
for idx, dsc, req, rpy, sts, val in io.pipeline(
operations=client.parse_operations(operations),
**hart_kwds):
log.detail("Client %s: %s --> %r: %s", io, dsc, val,
enip.enip_format(rpy))
reply = rpy
log.normal("HART pass-thru command Status: %s",
reply.get('query.status'))
return reply.get('query.reply_data.data', None)