Example: Read txt file and create Modbus configuration

2020-02-27T14:57:24.631000Z

Hi AndreyS.

AndreyS hat geschrieben:
Thanks for the example. I have another question about modifying Modbus configuration from Python. Is it possible to fill Modbus Slave configuration. I mean is it possible to add Modbus Slave Channels and fill ModbusGenericSerialSlave I/O Mapping in the Modbus Slave?

Have you checked the device parameters of the ModBus Slave device. You can access them through the property "device_paremeters" of the device object.

BR
Martin

Example: Read txt file and create Modbus configuration

2020-02-27T14:57:24.060000Z

Thanks for the example. I have another question about modifying Modbus configuration from Python. Is it possible to fill Modbus Slave configuration. I mean is it possible to add Modbus Slave Channels and fill ModbusGenericSerialSlave I/O Mapping in the Modbus Slave?

Example: Read txt file and create Modbus configuration

2020-02-27T14:57:23.432000Z

For the CUC I created a script which reads a .txt file containing information about the Modbus configuration and creates this in the active project.

Save the following in a txt file:
Modbus_COM (COM)
Master (ModbusMaster)
ModbusSlave1 (ModbusSlave)
ModbusSlave2 (ModbusSlave)

Then create a .py file with the following code.

print "Current project."
proj = projects.primary
\#Search for all top-level devices in project
for dev in proj.get_children():
   if dev.is_device:
      f = open("C:\_d\Python\ModbusImport\ModbusConfiguratie.txt", "r")
      for line in f:
         tok = line.split(' ')
         print tok[1], tok[0]
         if "(COM)" in tok[1]:
            dev.add(tok[0], DeviceID(92, "0000 0001", "3.4.0.0"))
            subnodes = dev.get_children()
            master = subnodes[len(subnodes) - 1]
         elif "(ModbusMaster)" in tok[1]:
            master.add(tok[0], DeviceID(90, "0000 0002", "3.4.3.0"))
            subnodes = master.get_children()
            coupler = subnodes[len(subnodes) - 1]
         elif "(ModbusSlave)" in tok[1]:
            coupler.add(tok[0], DeviceID(91, "0000 0001", "3.4.0.0"))
print "script finished."

Open a project, add your device (PLC) and run the script

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Example: Read txt file and create Modbus configuration

Example: Read txt file and create Modbus configuration

Example: Read txt file and create Modbus configuration