ZC-8AI is used to interface analog inputs (Voltage or current, also with bipolar range) with CANopen system. The modules is able to supply all 8 current loops at the same time, this is very useful for 2-wire sensors because the wiring does not need an external power supply. A 6-way galvanic isolation among Power supply // input (couples) // RS485 circuits assures the integrity of your datas.