Use ScadaBR with a USB to serial adapter to read two Modbus slaves

ScadaBR - Dúvidas e Suporte
1

Dear Sir:

I'm starting to use ScadaBR with a USB to serial adapter to read two Modbus slaves.

I can read each slave seperate, but fail when active them in same time ( I got a CRC dismatch error).

some one say I need to make it to  only one request can be sent at a time, but how can i do this?

thanks for your help.

 

 

 

2

Hello there,

Let me see if I can help you. Are you using different Modbus Addresses for each of them? Are both running at the same baud rate?

It should be fine to apply this kind of network, specially if you´re using a rs485 daisy chain connection.

Does ScadaBR reports any other error?

Best Regards