The Communication Isolator Board is high speed RS 422/485 Isolator . The optical isolation protects one segment of your network from problems that arises on the other. The model supports for RS 422/RS 485- 4 wire/RS 485- 2 wire. (Jumper Link selectable).
The Communication Redundancy Board is RS 422/485 redundancy switch. It has optical isolation that protects one segment of network from problems that arises on the other. Data can be switched over to the Output from either of the port depending on the corresponding data coming from the terminal server port.The model supports for RS 422/RS 485- 4 wire/RS 485- 2 wire.( Jumper Link selectable).