Omron CP1E-N40DT-D Programmable Logic Controller

Technical Overview

Compact 24VDC PLC with 40 built-in digital I/O (24 inputs, 16 sinking transistor outputs), 8K steps program capacity, and integrated RS-232C/USB ports.

Key Features

40 built-in digital I/O points: 24 inputs (24 VDC) and 16 sinking (NPN) transistor outputs
8K steps program capacity and 8K words data memory capacity
Integrated RS-232C serial communication port for easy HMI, drive, or barcode reader integration
Built-in high-speed USB 2.0 peripheral port for direct programming via CX-Programmer
Six high-speed counter inputs: 2 points at 100 kHz and 4 points at 10 kHz for precise rotational feedback
Two built-in 100 kHz high-speed pulse outputs for direct step and direction control of servo systems
Modbus-RTU Easy Master support for effortless serial integration with inverters and smart sensors
Expandable system footprint using standard CP1W and CPM1A expansion I/O modules

Technical Specification Matrix

Parameter	Value
Supply Voltage	24 VDC
Number of Inputs	24
Input Voltage	24 VDC
Number of Outputs	16
Output Type	Transistor (Sinking / NPN)
Output Current Rating	0.3 A per output
Program Capacity	8K steps
Data Memory Capacity	8K words
Built-in Communication Ports	USB (Peripheral), RS-232C
High-Speed Counter Inputs	6 points (2 x 100 kHz, 4 x 10 kHz)
Pulse Outputs	2 points (100 kHz)
Current Consumption at 5V DC	0.31 A
Current Consumption at 24V DC	0.02 A
Enclosure Protection Rating	IP20
Mounting Type	Panel Mount / DIN Rail
Operating Temperature Range	0 to 55 °C
Storage Temperature Range	-20 to 75 °C
Physical Weight (kg)	0.66
Dimensions L x W x H (cm)	8.5 x 15 x 9

Industrial Applications

1. Two-Axis High-Precision Labeling and Packaging Machines

Utilizing the dual integrated 100 kHz pulse outputs, the PLC directly commands step or direction signals to drive labeling roll-feed and bottle-indexing servo motors. Simultaneously, high-speed rotary encoders feed position data back into the PLC's 100 kHz high-speed counter inputs to achieve sub-millimeter placement accuracy on moving conveyors.

Problem Solved

Standard low-cost PLCs typically lack native high-frequency pulse outputs, forcing engineers to buy expensive external positioning units. The CP1E-N40DT-D integrates dual-axis 100 kHz pulse outputs on-board, minimizing component count and system costs while preserving cabinet space.

High-speed pulse outputsServo controlEncoder feedbackHigh-speed countersPosition control

2. Closed-Loop Liquid Filling Line with Flow-Meter Feedback

In a liquid dispensing operation, the PLC monitors high-frequency pulses from turbine flow meters through its built-in counter inputs. It drives solenoid valves via its fast-switching 0.3 A sinking transistor outputs to shut off the flow dynamically at a precise volume. The RS-232C port communicates with an HMI to display real-time fill rates.

Problem Solved

Relay-output PLCs possess contact delay and low operational lifespans under frequent cycling, causing inconsistent fill levels. The NPN sinking transistor outputs of this PLC offer instantaneous response times and virtually unlimited cycle life, solving valve-latency errors and reducing product waste.

Sinking transistor outputsHigh-speed countersFlow meter feedbackRS-232C communicationFast-switching logic

3. Intelligent Conveyor Routing with Barcode Reader Integration

The PLC coordinates array sensors across 24 digital inputs to track package arrival. As a package passes, a barcode reader scans the routing label and transmits destination strings directly to the PLC's integrated RS-232C port. The controller processes this destination against sorting tables in its 8K-word memory and fires NPN transistor outputs to drive pneumatic diverters.

Problem Solved

Routing lines with high I/O counts and basic barcode reader interfaces usually require multiple extension blocks or separate communications adapters. The 40 native I/O points combined with built-in RS-232C and ample memory allow this micro-PLC to execute complex string matching and track multi-lane sorting from a single module.

RS-232C communicationDigital inputsTransistor NPN outputsData memory capacityPneumatic sorting