The Omron NX-AD4604 Machine Automation Controller Analog Input Unit combines 2 differential voltage channels with high-resolution and fast conversion characteristics. Signals from -10 to +10 V are converted at 1/30000 resolution with ±0.1% overall accuracy. A 10 μs per-point conversion period supports fast acquisition, while Synchronous I/O and Free-Run refreshing allow the measurement method to match different control requirements. The NX-AD4604 adds differential voltage measurement capability to modular NX machine architectures. Its measurement characteristics complement the high-resolution PLC analog input range available for Omron machine automation applications.