NX-ID Controllers Omron Automation & Safety NX-ID Series Controllers can be used in general purpose and high-speed synchronous control applications. The Controllers include 4-point, 8-point, 16-point, and 32-point types with 3-wire, 2-wire and 1-wire connection methods. The digital input units allow for high-speed I/O refreshing with the NX-series EtherCAT Coupler. Synchronous Units update the status of input devices to the controller every EtherCAT cycle.