The Omron NX-AD4204 Machine Automation Controller Analog Input Unit uses 2 differential channels to acquire 4 to 20 mA signals with high measurement resolution. A 1/30000 conversion resolution and ±0.1% full-scale accuracy support precise current measurement, while the 10 μs per-point conversion time enables fast signal processing. Synchronous refreshing can be selected for measurements coordinated with controller operation, with Free-Run refreshing available for continuous acquisition. The NX-AD4204 addresses applications requiring differential current inputs and rapid analog conversion. It extends the measurement capabilities of the high-resolution PLC analog range within Omron industrial automation architectures.