class MBSerialServer(QThread):
def __init__(self, port, unit, data, baud, par, sec, parent):
super(MBSerialServer, self).__init__(parent)
self.slave = MBSlave(ModbusSequentialDataBlock(1, data[0]),
ModbusSequentialDataBlock(1, data[1]),
ModbusSequentialDataBlock(1, data[2]),
ModbusSequentialDataBlock(1, data[3]))
self.ctx = ModbusServerContext(slaves={unit: self.slave}, single=False)
sb = par == 'N' and 2 or 1
self.server = ModbusSerialServer(self.ctx,
framer=MRF,
port=port,
stopbits=sb,
bytesize=8,
parity=par,
baudrate=baud,
timeout=sec)
print(self.server)
def run(self):
self.server.serve_forever()
def quit(self):
self.server.server_close()
super(MBSerialServer, self).quit()
class MockTracerBN(threading.Thread):
def __init__(self,
serial_port='/dev/pts/4',
json_device_desc_path=DEVICE_JSON_DESC_PATH):
threading.Thread.__init__(self, name='MockTracerBN2')
self._serial_port = serial_port
# Build data backing store from json file.
mappings = json_mapping_parser(json_device_desc_path)
store = ModbusSlaveContext(di=ModbusSparseDataBlock(mappings['di']),
co=ModbusSparseDataBlock(mappings['co']),
ir=ModbusSparseDataBlock(mappings['ir']),
hr=ModbusSparseDataBlock(mappings['hr']))
identity = initialise_device_identity(mappings)
context = ModbusServerContext(slaves=store, single=True)
# RTU:
self.server = ModbusSerialServer(context,
framer=ModbusRtuFramer,
identity=identity,
port=self._serial_port,
timeout=0.001,
baudrate=115200)
def run(self):
self.server.serve_forever()
def stop(self):
if self.server.is_running:
self.server.server_close()
del self.server
def run_rtu(args, server_context):
server = ModbusSerialServer(
context=server_context,
framer=ModbusRtuFramer,
port=args.path,
baudrate=args.baud,
timeout=0.005)
server.serve_forever()
def testSerialServerServeForever(self):
''' test that the synchronous serial server closes correctly '''
with patch.object(serial, 'Serial') as mock_serial:
with patch('pymodbus.server.sync.ModbusSingleRequestHandler') as mock_handler:
server = ModbusSerialServer(None)
instance = mock_handler.return_value
instance.handle.side_effect = server.server_close
server.serve_forever()
instance.handle.assert_any_call()
def testSerialServerServeForever(self):
''' test that the synchronous serial server closes correctly '''
with patch.object(serial, 'Serial') as mock_serial:
with patch('pymodbus.server.sync.ModbusSingleRequestHandler') as mock_handler:
server = ModbusSerialServer(None)
instance = mock_handler.return_value
instance.handle.side_effect = server.server_close
server.serve_forever()
instance.handle.assert_any_call()
def main():
""" The main body of the emulator.
This listens for incoming requests and processes them. It starts by
initializing the context from config, then listening on the given
serial device.
"""
slaves = dict()
for device in emulator_config['devices']:
# for each device (unit), create an EmulatorDataBlock that has the register
# map defined in config
def _convert_register(v): # pylint: disable=missing-docstring
if isinstance(v, list):
# return a list of converted values
return [int(x, 16) for x in v]
# convert single value to int
return int(v, 16)
block = EmulatorDataBlock({
int(k, 16): _convert_register(v)
for k, v in device['holding_registers'].items()
})
logger.error('Device: {} Block: {}'.format(device['device_address'],
block.values))
store = ModbusSlaveContext(di=block, co=block, hr=block, ir=block)
slaves[device['device_address']] = store
context = ModbusServerContext(slaves=slaves, single=False)
for slave in context:
logger.error('Slaves: {}'.format(slave[0]))
identity = ModbusDeviceIdentification()
identity.VendorName = 'Vapor IO'
identity.ProductName = 'Synse Modbus Emulator'
identity.MajorMinorRevision = '1.4'
# this is done to allow us to actually use RTU framing which the Start shortcut prevents
server = ModbusSerialServer(context,
framer=ModbusRtuFramer,
identity=identity,
port=emulator_config['serial_device'],
timeout=0.01)
server.serve_forever()
class modbusServer():
def __init__(self):
self.__logging()
self.cfg = yamlImport.importYAML("./cfg/modbusSettings.yaml")
self.builder = BinaryPayloadBuilder(endian=Endian.Little)
self.__setupContext()
self.__serverInfo()
self.__configureServer()
def __logging(self):
import logging
logging.basicConfig()
log = logging.getLogger()
log.setLevel(logging.INFO)
def __setupContext(self):
#Setup Coils
co = ModbusSequentialDataBlock(1, [0]*1)
di = ModbusSequentialDataBlock(1, [0]*6)
#Setup Registers (Inc floats)
for i in range(0,3):
self.builder.add_32bit_float(0.0)
ir = ModbusSequentialDataBlock(1, self.builder.to_registers())
for i in range(0,3):
self.builder.add_32bit_float(0.0)
hr = ModbusSequentialDataBlock(1, self.builder.to_registers())
#Setup datastore
store = ModbusSlaveContext(co=co,di=di,hr=hr,ir=ir)
self.context = ModbusServerContext(slaves=store, single=True)
def __serverInfo(self):
self.identity = ModbusDeviceIdentification()
self.identity.VendorName = self.cfg["VendorName"]
self.identity.VendorUrl = self.cfg["VendorUrl"]
self.identity.ProductName = self.cfg["ProductName"]
self.identity.ModelName = self.cfg["ModelName"]
self.identity.MajorMinorRevision = self.cfg["Revision"]
def __getIPAddress(self):
if self.cfg["manualIP"] == "N":
return socket.gethostbyname(socket.gethostname())
return self.cfg["ip"]
def __configureServer(self):
if self.cfg["method"] == "tcp":
self.servTCP = ModbusTcpServer(self.context,
identity=self.identity,
address=(self.__getIPAddress(),
self.cfg["tcpPort"]))
elif self.cfg["method"] == "rtu":
self.servRTU = ModbusSerialServer(self.context,
framer=ModbusRtuFramer,
identity=self.identity,
port=self.cfg["rtuPort"],
stopbits=self.cfg["stopbits"],
bytesize=self.cfg["bytesize"],
parity=self.cfg["parity"],
baudrate=self.cfg["baudrate"],
timeout=self.cfg["timeout"])
else:
raise ReferenceError("Invalid server type")
def runServer(self):
if self.cfg["method"] == "tcp":
self.servTCP.serve_forever()
elif self.cfg["method"] == "rtu":
self.servRTU.serve_forever()
else:
raise ReferenceError("Invalid server type")
def stopServer(self):
if self.cfg["method"] == "tcp":
self.servTCP.server_close()
self.servTCP.shutdown()
elif self.cfg["method"] == "rtu":
self.servRTU.server_close()
else:
raise ReferenceError("Invalid server type")
def encodeData(self,data):
self.builder.reset()
try:
for i in range(0,len(data)):
self.builder.add_32bit_float(data[i])
except TypeError:
self.builder.add_32bit_float(data)
return self.builder.to_registers()
def decodeData(self,data):
returnData = [0]*(len(data)/2)
decoder = BinaryPayloadDecoder.fromRegisters(data, endian=Endian.Little)
for i in range(0,len(data)/2):
returnData[i] = round(decoder.decode_32bit_float(),2)
return returnData
class modbusServer():
def __init__(self):
self.__logging()
self.cfg = yamlImport.importYAML("./cfg/modbusSettings.yaml")
self.builder = BinaryPayloadBuilder(endian=Endian.Little)
self.__setupContext()
self.__serverInfo()
self.__configureServer()
def __logging(self):
import logging
logging.basicConfig()
log = logging.getLogger()
log.setLevel(logging.INFO)
def __setupContext(self):
#Setup Coils
co = ModbusSequentialDataBlock(1, [0] * 1)
di = ModbusSequentialDataBlock(1, [0] * 6)
#Setup Registers (Inc floats)
for i in range(0, 3):
self.builder.add_32bit_float(0.0)
ir = ModbusSequentialDataBlock(1, self.builder.to_registers())
for i in range(0, 3):
self.builder.add_32bit_float(0.0)
hr = ModbusSequentialDataBlock(1, self.builder.to_registers())
#Setup datastore
store = ModbusSlaveContext(co=co, di=di, hr=hr, ir=ir)
self.context = ModbusServerContext(slaves=store, single=True)
def __serverInfo(self):
self.identity = ModbusDeviceIdentification()
self.identity.VendorName = self.cfg["VendorName"]
self.identity.VendorUrl = self.cfg["VendorUrl"]
self.identity.ProductName = self.cfg["ProductName"]
self.identity.ModelName = self.cfg["ModelName"]
self.identity.MajorMinorRevision = self.cfg["Revision"]
def __getIPAddress(self):
if self.cfg["manualIP"] == "N":
return socket.gethostbyname(socket.gethostname())
return self.cfg["ip"]
def __configureServer(self):
if self.cfg["method"] == "tcp":
self.servTCP = ModbusTcpServer(self.context,
identity=self.identity,
address=(self.__getIPAddress(),
self.cfg["tcpPort"]))
elif self.cfg["method"] == "rtu":
self.servRTU = ModbusSerialServer(self.context,
framer=ModbusRtuFramer,
identity=self.identity,
port=self.cfg["rtuPort"],
stopbits=self.cfg["stopbits"],
bytesize=self.cfg["bytesize"],
parity=self.cfg["parity"],
baudrate=self.cfg["baudrate"],
timeout=self.cfg["timeout"])
else:
raise ReferenceError("Invalid server type")
def runServer(self):
if self.cfg["method"] == "tcp":
self.servTCP.serve_forever()
elif self.cfg["method"] == "rtu":
self.servRTU.serve_forever()
else:
raise ReferenceError("Invalid server type")
def stopServer(self):
if self.cfg["method"] == "tcp":
self.servTCP.server_close()
self.servTCP.shutdown()
elif self.cfg["method"] == "rtu":
self.servRTU.server_close()
else:
raise ReferenceError("Invalid server type")
def encodeData(self, data):
self.builder.reset()
try:
for i in range(0, len(data)):
self.builder.add_32bit_float(data[i])
except TypeError:
self.builder.add_32bit_float(data)
return self.builder.to_registers()
def decodeData(self, data):
returnData = [0] * (len(data) / 2)
decoder = BinaryPayloadDecoder.fromRegisters(data,
endian=Endian.Little)
for i in range(0, len(data) / 2):
returnData[i] = round(decoder.decode_32bit_float(), 2)
return returnData
