The Omron CP1LEM30DTD.1 is a CP1 Series compact PLC built for distributed small-machine control tasks requiring Ethernet connectivity and a fixed I/O count of 30 points. It packs 18 digital inputs, 2 analog potentiometer inputs, and 12 transistor sinking outputs into a DIN-rail mountable package. Scan time runs at 0.4 ms, program capacity is 10000 steps, and data memory holds 32000 words with battery backup for up to 5 years.
Key ratings and what they mean for your BOM line
The 0.4 ms scan handles fast logic sequences for packaging or pick-and-place cells without breaking a sweat. Four high-speed counters and two impulse outputs support basic positioning and speed monitoring without an extra module. The 8-bit potentiometer inputs are suited for simple trim adjustments (speed pots, volume controls) — not for precision analog measurement. The transistor sinking outputs are intended for DC loads; watch the 1.7 A total load current per bank when driving multiple solenoids or indicator lights. Ethernet port enables direct connection to an upstream controller or HMI over standard TCP/IP — no added fieldbus coupler needed. The real-time clock logs events with timestamps, and the battery-backed data memory survives power loss for five years — a critical-spare consideration if your machine relies on retained recipe data.
How the CP1LEM30DTD.1 compares to the CP1LEM40DTD.1
The sibling CP1LEM40DTD.1 shares the same CP1 Series, scan time, memory size, and Ethernet interface, but carries 40 I/O points (24 digital inputs, 16 transistor outputs) and a single analog potentiometer input. If your panel layout is already wired for a 40-point CPU, the 30TD will not drop in without rewiring the I/O harnesses and adjusting the program’s I/O map. Conversely, if your BOM specifies exactly 30 I/O points and two trim pots, the 30TD matches that bill without wasting points — the 40TD would leave eight inputs and four outputs unused. The physical footprint is identical; both mount on DIN rail and use screw terminals.