Question about EX A2X communication protocol

[Edilson Adriano Lucas]

 

Hello, I have assembled a MODBUS RS485 network to communicate 2 inverters and 2 softstarters. When performing the tests of communication did not obtain success. When I removed the cable from the EX A2X or A1X module, it started communicating. I am using the COM2 port with the termination jumper.

 

[Ausman]

Initial thought is to check that you don't have the same ID somewhere throughout the 485 network.

cheers,

Aus

[Edilson Adriano Lucas]

1 hour ago, Ausman said:

Initial thought is to check that you don't have the same ID somewhere throughout the 485 network.

cheers,

Aus

 

Ausman good evening, my ID configured in the initial configuration of the network is number "2". The funny thing is that in the V230 model, I was able to communicate with the equipments having the expansion module EX A2X. But the V570 did not work, just when I removed the cable from the EX A2X module.

 

[Ausman]

2 hours ago, Edilson Adriano Lucas said:

my ID configured in the initial configuration of the network is number "2"

yes.....but are any of the 485 network IDs throughout the network the same?

Aus