The Omron NX-EC0212 Machine Automation Controller Position Interface Unit provides 2 NPN encoder channels for acquiring incremental position signals from multiple axes or devices. Each channel supports response frequencies up to 500 kHz with 24 V level inputs, while 2/2 I/O mapping provides the specified interface for position data exchange. Free-Run, Synchronous I/O, and Task-Period Prioritized refreshing support different timing requirements for transferring encoder information to the controller. The NX-EC0212 expands encoder acquisition capacity within an NX control architecture by integrating 2 feedback channels in one module. It complements the PLC position control range across Omron motion automation applications.