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Communication with Beckhoff computers

Basic information:
- The Beckhoff company headquarters is located in Verl, Germany.
- Their products are open systems based on PC platform (Industrial PCs, Embedded PCs).
 

Communication by Modbus protocol

The Beckhoff computers support communication by the Modbus protocol. For this communication in the PROMOTIC system can be used: PmModbusMr - Driver for communication by 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:
- PmCommData > Parameters > Special Parameters > Area base addresses:
- base address "Bo = Coil/output bits" = 0
- base address "Bi = Input bits" = 0
- base address "Ro = Holding/output registers" =
12288 (=3000 hexa) For Ethernet
16384 (=4000 hexa) For serial link
- base address "Ri = Input registers" =
12288 (=3000 hexa) For Ethernet
16384 (=4000 hexa) For serial link
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