What this PLC is and what it fits
The CP1E-N40DR-D is a 24 VDC-powered PLC from Omron's CP1E series, packing 24 digital inputs and 16 relay outputs into a single compact unit. It runs on CX-One software and stores up to 8K Words of program memory — enough for moderate machine control or small-line automation. The relay outputs handle AC or DC loads up to the contact rating, making it a flexible choice for mixed-load panels. The unit mounts on a DIN rail or directly to a chassis, and its RS-232C port handles programming and basic serial communication. Option cards can add additional communication protocols if needed. The battery backup preserves the program and retained data during power loss. Approvals include CE, cULus, Lloyd, and NK, so it meets the common certification requirements for industrial control panels in North America, Europe, and marine applications.
How it compares to the CP1E-N40DT1-D
The CP1E-N40DT1-D shares the same 24 digital inputs, 24 VDC supply, 8K Words memory, and expandability, but its 16 outputs are solid-state (transistor) instead of relay. That means the DT1-D switches faster and has no mechanical wear, but it cannot directly switch AC loads or high-current DC loads the way the relay version can. If your outputs drive contactors, solenoids, or motor starters, the DR-D's relay outputs are the right fit. If you need high-speed output switching or longer electrical life, the DT1-D is the better choice.
Panel integration notes
The CP1E-N40DR-D weighs 1.5 lbs (680.4 g) and ships in a box. It mounts on a DIN rail or chassis.