What it is
The Omron NX-DA3203 is the four-channel analog output slice in the NX-series I/O family — an Output Module that mounts on a standard DIN rail and lands on the bus coupler through the NX-series spring-terminal header. Four analog outputs is the headline functional figure: the module drives four independent loops from one slice instead of stacking two dual-channel cards.
Where this class is used
The module sits between the NX-series bus coupler and field devices, listed as EtherCAT / EtherNet/IP coupling on this component line. Because the module shares the NX form factor and spring-termination pitch with the rest of the family, it drops into a populated NX slice without breaking the backplane layout.
Ratings that decide fit
The 0°C to 55°C operating envelope is the cabinet-side gate: inside an enclosed panel with convection cooling the module runs to its rated spec, but anything above 55°C ambient starts eating into the analog accuracy budget. The approval list — CE, cULus, C-Tick, KC, Lloyd, and NK — is broad enough to ship into North American, European, Australian, Korean, and marine-class panels from the same BOM line.
Lifecycle and sourcing
For a BOM freeze, that means the NX-DA3203 is specified into the bill of materials and quoted to order against an RFQ; no PCN/LTB watch needed, and no second-source cross-reference is forced by the supplier.