Communication with Modicon PLC devices
For communication of the PROMOTIC application with the
Schneider-Electric Modicon devices (
http://www.schneider-electric.com), for example, the following methods can be used:
Communication by Modbus protocol
The
Modicon devices support the
communication by the Modbus protocol. For this communication in the PROMOTIC system can be used:
PmModbusMr - Driver for communication by the Modbus Master protocol.
For easy integration of this driver into the application it is handy to use:
For this driver, it is recommended to set the configurators:
-
PmaCommGroup > Parameters > Special Parameters > Area base addresses:
- base address "Bo = Coil/output bits" = 0 (for old PLC types = 1)
- base address "Bi = Input bits" = 0 (for old PLC types = 10001)
- base address "Ro = Holding/output registers" = 0 (for old PLC types = 40001)
- base address "Ri = Input registers" = 0 (for old PLC types = 30001)