First TwinCAT PLC Project on a Beckhoff IPC
Build and verify a first TwinCAT PLC project on a Beckhoff IPC. This checklist covers target selection, EtherCAT discovery, I/O mapping, safe activation, restart tests, and commissioning records.
Manufacturer: Omron
Product No.: CP1L-EM40DR-D
Country of origin:Japan
Product Type: PLC CPU Modules
Payment: T/T, Western Union
Weight: 2000g
Shipping port: Xiamen
Warranty: 12 months
Engineered for flexible machine control and seamless industrial networking, this Omron CP1L-EM40DR-D controller integrates embedded Ethernet communication with robust processing capability in a compact form factor. By eliminating the need for external option boards for basic networking, this CP1L series CPU optimizes panel space and simplifies network commissioning. The platform features a high-density 40-point I/O configuration consisting of 24 inputs and 16 robust relay outputs, making it highly suitable for material handling, auxiliary system control, and packaging applications.
| Parameter | Specification |
|---|---|
| Manufacturer | Omron |
| Model Reference | CP1L-EM40DR-D |
| Product Series | CP1L-EM (Embedded Ethernet Series) |
| Power Supply Voltage | 24 VDC |
| Program Capacity | 10K steps |
| Total Built-In I/O Points | 40 Points |
| Built-In Inputs | 24 DC Inputs |
| Built-In Outputs | 16 Relay Outputs |
| High-Speed Counters | 100 kHz, 4 axes |
| Network Communications | 1 x RJ45 Ethernet Port (FINS/TCP, Socket Services) |
| Net Weight | 555 g max |
| Shipping Weight (Calculated) | 2.0 kg |
The CP1L-EM40DR-D with integrated Ethernet replaces configurations that historically relied on basic CP1L-M series units fitted with add-on CP1W-CIF41 Ethernet boards. This reduces hardware points of failure and saves the option board slot for other serial interfaces (such as RS-232C or RS-422A/485). Programs created for non-Ethernet CP1L units can be migrated easily inside CX-Programmer by updating the PLC model type and adjusting network settings.
Keep in mind that because this unit uses relay outputs, it does not support high-speed pulse outputs (such as PTO for servo or stepper control). If your application requires high-speed pulse outputs, you must select a transistor output model (e.g., CP1L-EM40DT-D or CP1L-EM40DT1-D). Furthermore, ensure the inductive loads driven by the relay outputs are suppressed using external diodes or RC snubbers to protect the internal physical contacts from premature pitting and contact welding.
To configure the embedded Ethernet interface, ensure your programming PC is set to the same subnet mask. The default IP address setup of the CP1L-EM can be set using CX-Programmer. When wiring high-speed inputs to the high-speed counters, route the encoder cables inside shielded twisted pairs separate from high-power AC lines to prevent noise-induced false triggers on the high-speed digital inputs.
Always isolate the primary AC/DC power sources feeding the control enclosure prior to installing, wiring, or removing this controller. Confirm that the 24 VDC power supply matches the polarity requirements of the power terminals to prevent catastrophic damage to the internal mainboard.
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Returns & Warranty

Global Express Shipping
Returns & Warranty
Orders are processed and delivered Monday-Friday (excluding public holidays).
For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .
| Country of origin |
Japan
|