Allen-Bradley 1746-N04V Discrete Output Module

The Allen-Bradley 1746-N04V (also listed as 1746-NO4V in catalogs) is a four‑channel analog voltage output module for the SLC 500 family. It provides four independent 0–10 V DC outputs that are used to drive external devices such as proportional valves, analog actuators, or process controllers. Each channel is addressed by the PLC’s analog output word, enabling straightforward conversion from ladder logic to the corresponding voltage signal. The module plugs into a 1746 backplane in an SLC‑500 chassis and is powered by the backplane, consistent with other 1746 I/O modules. With four voltage outputs, it enables four‑point control of analog loads from a single module. Typical applications include process control loops, calibration setups, and test rigs where multiple 0–10 V signals are needed from one module within legacy Allen‑Bradley systems.