3/6/2024 9:28 AM | |
Joined: 12/7/2020 Last visit: 8/14/2024 Posts: 37 Rating:
|
S7-1200 + CM1241(RS485) TIA portal V17 update 6 Hello! I'm trying to communicate my PLC with Simex weight module SWI-94 ( PDF manual SWI-94 page 43). I faced some problems so i started debugging everything with USB RS485 adapter. First i checked if it is possible to get data from weight module - that worked without a problem. Then i tried to connect PLC to PC and i can't make it work. After I run MB_COMM_LOAD block, MB_MASTER stays in BUSY . There is no timeout. RX/TX led isn't blinking. There is my configuration: Wiring: CM1241 is configured as RS485 2-wire, protocol free port, Non bias Baud 9600 Parity none 8 bit / char Stop bit 1 Wiring and should be OK, because once MB_MASTER was timeout, and was sending RX every 1000ms. Then i was able to read RX communication in "Modbus Slave" simulator program. |
3/6/2024 9:58 AM | |
Joined: 12/7/2020 Last visit: 8/14/2024 Posts: 37 Rating:
|
Yes, I forgot to mention that. |
Follow us on