Micrologix 1400 Modbus RTU RS485

Hi everyone,

Im new using modbus and i have some toubles im trying to communicate a micrologix 1400 and a device Satec pm130 via modbus and using the 1763-NC01 cable but it doesn´t works. Can anybody help me Please.
the satec terminals only have rs485+ , rs485- and Shield.
and de 1763-NC01 Term, A, B, Com, Shld, cgnd.


Thanks

I’m pretty sure A and B are the ones used when the port is configured for RS485. Keep in mind that you need to configure the channel 0 port to be RS485 (it defaults to RS232). You may also need to swap A and B around.

As Firejo said...

See picture. Set channel 0's "Protocol Control" to "No Handshaking (485 network)

Hi Mickey ,
I Set channel 0's "Protocol Control" to "No Handshaking (485 network) as you say and works!!! thanks I will continue testing and told them the results.

Thanks a Lot!!