Using 4 Channel Relay controller with rs485 protocol

Hi... I would like to know how to control the relays of a 4 channel relay board using rs485 protocol....

I have a 4 channel relay board with ‘A’ and ‘B’ pins which are for rs-485 serial communication.... But I dont know how to control the relays using these pins...

Can anyone please give me some info on this topic?

The info is no clue! I am sure you have Googled rs-485 and studied the results. And I am sure you have searched the Arduino forum for RS-485 and studied what other people are doing. But you have failed to supply any information on the relay board you are looking at, so until you do, the answer is no clue.

Paul

can you give a link to information on the relay board?