CPU with 40 I/O and Ethernet in the CP1 Series
The Omron CP1LEM40DTD.1 is a current-production CPU in the CP1 Series, offering 40 I/O points split across 24 digital inputs and 16 transistor sinking outputs. It runs a 0.4 ms scan time and has an Ethernet port for direct network connectivity, plus a real-time clock and battery-backed data memory for up to 5 years. Program capacity is 10000 steps and data memory 32000 words. The analog input is a single 8-bit potentiometer channel. Four high-speed counters and two impulse outputs handle basic motion or counting tasks. Power supply range is 20.4–26.4 VDC. The unit mounts on a DIN rail and has removable screw terminals. Protection rating is IP20.
How it sits against the 30-point sibling
The CP1LEM40DTD.1 has 24 digital inputs and 16 transistor sinking outputs, compared to 18 and 12 for the CP1LEM30DTD.1. The 40 I/O total exceeds the 30-point version, while the scan time, Ethernet, and voltage range remain identical.
Mounting and wiring basics
DIN-rail mount with IP20 enclosure. All I/O and power connections use removable screw terminals, which speeds up panel wiring and swap-out. The battery-backed data buffer holds programs and retained memory for up to 5 years; the battery is user-replaceable. Programming is via ladder diagram only, over Ethernet using CX-One or Sysmac Studio. No USB port on this variant, so the Ethernet port is the only PC link.