Communication with the bus coupler takes place via an asynchronous serial RS485 connection. Both channels are galvanically isolated from each other. An additional potential separation is not necessary.
The module has safe isolation for operating voltages up to 300 V in accordance with EN 61010-1. In the event of service, the module can be replaced quickly and easily during operation (HotSwap). The signal state of the inputs is indicated via status LEDs. In the event of an error, the modules operate with previously defined error values to ensure safe process control (fail safe).