Omron CP1L-EL20DR-D — 20-Point PLC, Ethernet, Relay, 24 VDC
SKU: CP1L-EL20DR-DUSD 185.00
CP1L-EL compact PLC, 12 DC inputs / 8 relay outputs, 24 VDC supply, built-in Ethernet, DIN-rail mount, CX-Programmer.
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Product Overview
The Omron CP1L-EL20DR-D is a 20-point compact PLC from the CP1L-EL family — 12 DC inputs, 8 relay outputs, 24 VDC supply, and a built-in Ethernet port on the underside for HMI / SCADA / PLC-to-PLC networking without an extra comms module. It sits in Omron's CP1 line between the entry-level CP1E (no Ethernet, fewer instructions) and the modular CP1H — small enough to fit in a tight cabinet, capable enough to run a small packaging or transfer machine on its own.
The "EL" suffix means Ethernet + relay outputs are both standard — the EM suffix is the same body with transistor (sourcing) outputs for high-speed pulse positioning. The "D" at the end of the part number means 24 VDC supply; the equivalent "A" version (CP1L-EL20DR-A) runs from 100–240 VAC and is the pick for retrofitting AC-supplied cabinets.
Where the CP1L-EL20DR-D fits
This CPU is sized for small standalone machines: a packaging-line infeed, a slide-gate operator, a tunnel-oven indexer, a small dosing skid, a conveyor junction, or a building-services utility panel. Relay outputs let it switch solenoid valves, motor contactors, pilot lamps, and small heating elements directly without an interposing relay — useful when the load mix is mixed AC/DC. The built-in Ethernet avoids a CP1W-CIF41 module just to talk to an NS / NB HMI.
Choosing this variant over its siblings
The CP1L-EL20DR-D holds 5K steps of program and 32K words of data memory, four 100 kHz single-phase high-speed counter inputs, and one 100 kHz pulse output for simple positioning. If the application does not need Ethernet, save cost with the CP1L-L20DR-D (USB only). If transistor sinking outputs are acceptable — for instance to switch a DC load directly — use CP1L-EL20DT-D. If the cabinet is fed with AC mains, use CP1L-EL20DR-A. For a 40-point head with more built-in I/O and capacity for three expansion modules, step up to a CP1L-EM40DR-D.
Before ordering
Confirm the panel really has 24 VDC available — the "D" suffix is DC-only. Plan for one CP1W expansion slot if anything more than the 12 inputs / 8 outputs is needed. Programming is via CX-Programmer (part of CX-One), and the option-board slot on top accepts RS-232C or RS-485 / 422 serial boards for legacy devices. The relay contacts are rated 2 A per point (8 A per common) — larger motor contactor coils should still get an interposing relay.
Key Features
- CP1L-EL family, 20 I/O compact PLC
- 12 DC24V inputs / 8 relay outputs (2 A per point, 8 A common)
- 24 VDC supply ("D" suffix)
- Built-in 100 Mbps Ethernet port — FINS/UDP, FINS/TCP, socket service
- 5K-step program capacity, 32K-word data memory
- 4 × 100 kHz high-speed counters, 1 × 100 kHz pulse output
- Up to 1 CP1W expansion module
- Peripheral USB programming port
- DIN-rail or panel mount
- SKU: CP1L-EL20DR-D
- Series: CP1L-EL20DR-D
- Voltage: 24 VDC
- I/O: 20 I/O
Best-Fit Applications
- Standalone small packaging, sorting, or assembly-machine controller with HMI over Ethernet
- Material-handling conveyor junction logic with mixed AC and DC loads
- Building-services or utility-skid controller (water, HVAC, dosing) with remote status
- Retrofit for an older CPM2A / C20 in a small panel where Ethernet is now required
- OEM machine base controller distributed across a production line
Buying Checklist
- Confirm the cabinet supplies 24 VDC, not 100–240 VAC — for AC mains supply pick the CP1L-EL20DR-A instead.
- Pick the EL (Ethernet, relay) when you need both networking and direct AC/DC load switching; switch to EM (Ethernet, transistor) for high-speed pulse positioning, or L (USB, relay) if Ethernet is not needed.
- Plan for one CP1W expansion slot if the application may grow — the EL20 head accepts one CP1W module for up to 60 extra I/O points.
- Install CX-Programmer (CX-One) before wiring — the option-board slot accepts RS-232C, RS-485, or RS-422 boards for legacy devices.
- Verify the relay load ratings — 2 A per point and 8 A per common are the figures to check against motor contactor coils and solenoid valves.
Technical Specifications
| Model | CP1L-EL20DR-D (CP1L-EL, Ethernet + Relay) |
|---|---|
| Total I/O | 20 points (12 DC inputs / 8 relay outputs) |
| Output | Relay, 2 A per point, 8 A per common |
| Power Supply | 24 VDC |
| Program Capacity | 5K steps |
| Data Memory | 32K words |
| Built-in Ethernet | 100 Mbps (FINS/UDP, FINS/TCP, socket service) |
| High-Speed Counters | 4 × 100 kHz single-phase |
| Pulse Output | 1 × 100 kHz |
| Expansion | Up to 1 CP1W module (≤60 extra I/O points) |
| Programming | CX-Programmer (CX-One) |
| Operating Temperature | 0 to +55 °C |
Resources & Downloads
FAQ for CP1L-EL20DR-D
What is the difference between CP1L-EL20DR-D and CP1L-L20DR-D?
The EL version has a built-in 100 Mbps Ethernet port for HMI, SCADA, and PLC-to-PLC networking — the L version has only a peripheral USB programming port. Use the EL when you want the HMI to talk to the PLC over the LAN; use the L and save the cost when nothing on the machine needs Ethernet.
Can the CP1L-EL20DR-D drive a VFD or servo drive?
Yes, in two ways. For Modbus RTU over serial, fit a CP1W-CIF11 or CP1W-CIF12 option board and run Modbus to a 3G3MX2 / 3G3JE inverter. For step/direction drives, use the built-in 100 kHz pulse output on transistor siblings (CP1L-EL20DT-D / -EM). The DR (relay) version is the better fit for VFDs that only need start/stop and frequency-command contacts.
What software programs the CP1L-EL20DR-D?
CX-Programmer, included in the CX-One suite. Programming can be done over the USB peripheral port, over Ethernet from a laptop on the same LAN, or via an NS / NB HMI with the Sysmac Studio / CX-Designer tools. Retain a copy of CX-Programmer 9.x if your project is stable — latest CX-One may not include legacy CP1 support.
Can I expand the CP1L-EL20DR-D beyond 20 I/O?
Yes — one CP1W expansion module can be fitted to the right of the CPU (CP1W-8ED, 20EDR, 20EDT, 40EDR, AD041, DA021, TS, etc.). Total addresses cap out at 60 extra I/O points. For more I/O, step up to a CP1L-EM40DR-D head, which accepts three CP1W modules.
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