I have problem with communinication CANOpen between S7-1215 + CM CANOpen model and Valves with communication hat (bukert 8681 with bus/CANOpen).
I already “almost” succesfully communicate with one Valve (communication hat) - I’m able to read position of the valve (Valve ID = 1) but I dont have a clue how to red information (position) from another valve (ID = 2), I see that communication between those two valves and PLC is ok (diagnostic LEDs indicator show connection status).
For the communication I use function blocks WRREC and RDREC.
If I change position of the first valve (ID = 1) I recive information to “DB_SOV_001”.sov.sov0" variable and to “DB_SOV_001”.sov.sov0" (the same information) but when I change position of the second valve (ID = 2) there nothing change (contro hat give a discreete digital I/O signals).
below screens from CANOpen configurator
In the future I would like to communicate with 36 same valves (with bus/Canopen bukert hats), for that case I’ll use 3x CM CAN modules, each one wil be master in CANOpen network"
CM CANOpen_1 - 16x valve (ech valve 1 byte IN / 1 BYTE OUT);
CM CANOpen_2 - 14x valve (ech valve 1 byte IN / 1 BYTE OUT);
CM CANOpen_1 - 6x valve (ech valve 1 byte IN / 1 BYTE OUT);
How can I read another valve position status?
Is it possible to connect CM Canopen modules with 3 independend CAN open networks (each CM module will be master)?