The Modbus I/O module provides 6 wet contact digital input channels and 6 form A electromechanical relays. It features optical isolation for 3000 VDC of transient overvoltage protection and doesn’t have channel-to-channel isolation. Each input channel can be used as a 32-bit counter. The power-on value and safe value of relay are programmable. The data is sent from the Modbus I/O to the CMS over the IP-network.
The Modbus I/O module requires PoE for power supply.