def connect(self):
if not self.libLoaded:
#from artisanlib.s7client import S7Client
from snap7.common import load_library as load_snap7_library
# first load shared lib if needed
platf = str(platform.system())
if platf in ['Windows', 'Linux'] and artisanlib.util.appFrozen():
libpath = os.path.dirname(sys.executable)
if platf == 'Linux':
snap7dll = os.path.join(libpath, "libsnap7.so")
else: # Windows:
snap7dll = os.path.join(libpath, "snap7.dll")
load_snap7_library(
snap7dll) # will ensure to load it only once
self.libLoaded = True
if self.libLoaded and self.plc is None:
# create a client instance
from artisanlib.s7client import S7Client
self.plc = S7Client()
# next reset client instance if not yet connected to ensure a fresh start
if self.plc is not None and not self.isConnected():
try:
self.plc.disconnect()
except:
pass
with suppress_stdout_stderr():
time.sleep(0.4)
try:
self.plc.connect(self.host, self.rack, self.slot,
self.port)
time.sleep(0.4)
except Exception:
pass
if self.isConnected():
self.sendmessage(
QApplication.translate("Message", "S7 Connected", None))
time.sleep(0.4)
else:
time.sleep(0.6)
try:
self.plc.disconnect()
except:
pass
# we try a second time
with suppress_stdout_stderr():
time.sleep(0.4)
self.plc.connect(self.host, self.rack, self.slot,
self.port)
time.sleep(0.4)
if self.isConnected():
self.sendmessage(
QApplication.translate("Message", "S7 Connected",
None) + " (2)")
time.sleep(0.4)
self.updateActiveRegisters()
def connect(self):
from artisanlib.s7client import S7Client
from snap7.common import load_library as load_snap7_library
# first load shared lib if needed
platf = str(platform.system())
if platf in ['Windows', 'Linux'] and artisanlib.util.appFrozen():
libpath = os.path.dirname(sys.executable)
if platf == 'Linux':
snap7dll = os.path.join(libpath, "libsnap7.so")
else: # Windows:
snap7dll = os.path.join(libpath, "snap7.dll")
load_snap7_library(snap7dll) # will ensure to load it only once
# next reset client instance if not yet connected to ensure a fresh start
if self.plc and not self.plc.get_connected():
self.plc = None
# connect if not yet connected
if self.plc is None:
self.plc = S7Client()
with suppress_stdout_stderr():
time.sleep(0.4)
self.plc.connect(self.host, self.rack, self.slot, self.port)
time.sleep(0.4)
if self.plc.get_connected():
self.sendmessage(
QApplication.translate("Message", "S7 Connected", None))
time.sleep(0.7)
else:
time.sleep(0.6)
self.plc = S7Client()
# we try a second time
with suppress_stdout_stderr():
time.sleep(0.4)
self.plc.connect(self.host, self.rack, self.slot,
self.port)
time.sleep(0.4)
if self.plc.get_connected():
self.sendmessage(
QApplication.translate("Message", "S7 Connected", None)
+ " (2)")
time.sleep(0.7)
