The Omron CP1E-N40S1DT-D, also cataloged as the CP1E-N40S1DT-D PLC Programmable Controller, operates as a dedicated hardware component for localized sequential execution, serial Modbus/RS-485 communication, and high-speed pulse motion control within Omron CP1E automation networks.

Technical Identifier Matrix

• Series Prefix (CP1E): Compact programmable controller platform
• Class Identifier (N): Application model with built-in communication ports and expansion capability
• I/O Capacity Code (40): 40-point frame size chassis architecture
• Unit Type (S1): Renewal specification design with built-in RS-485 port
• Input Type (D): 24 VDC discrete inputs
• Output Type (T): Transistor outputs, sinking topology
• Power Supply (D): 24 VDC operating power supply input

Hardware Specifications

PLC Determinism and Backplane Bus Velocity

The Omron CP1E-N40S1DT-D utilizes a high-speed logic execution engine optimized for deterministic ladder processing and direct serial synchronization via its integrated RS-485 port. Built-in 100 kHz transistor output registers allow direct control of servo and stepper drives without intermediate communication interface modules.

Data memory transfer and I/O status refresh cycles execute synchronously across the internal expansion bus. When connected to CP1W expansion modules, backplane bus velocity ensures cyclic I/O updates remain deterministic, buffering RS-485 serial data packets without increasing logic scan overhead or delaying high-speed counter register updates.

Package Contents & Ordering Information

• 1x Omron CP1E-N40S1DT-D Programmable Controller Unit
• 1x Removable Screw Terminal Block Assembly
• 1x Hardware Installation Sheet

Field Installation Guidelines

• DIN-Rail Mounting: Clip the controller securely onto a 35 mm DIN rail (PFP-50N/PFP-100N). Maintain 50 mm clearance above and below the housing for heat dissipation.
• 24 VDC Power Wiring: Connect 24 VDC power conductors to the DC power supply terminals (+ and -). Torque terminal screws to 0.5 N-m.
• RS-485 Serial Wiring: Use shielded twisted-pair cabling for RS-485 connections. Terminate both ends of the transmission line with a 120-ohm termination resistor.
• Grounding Setup: Connect the functional ground (FG) terminal to an isolated earth ground line with a conductor impedance under 100 ohms.
• Shielding Procedures: Clamp high-speed input and RS-485 communication cable shields to ground using 360-deg braid grounding hardware.

Frequently Asked Questions

• What power supply voltage is required for the CP1E-N40S1DT-D?

  The controller operates on a nominal 24 VDC power supply input with an acceptable range of 20.4 to 26.4 VDC.

• What serial interfaces are built directly into this renewal model?

  This model features 1 built-in USB 2.0 port for programming and 1 integrated RS-485 port for serial communication.

• What switching configuration is used for the transistor outputs?

  The 16 transistor outputs use a sinking topology where the load is connected between the positive supply rail and the output terminal.

• What is the high-speed pulse output capability of the CPU?

  The CPU provides 2 axes of high-speed pulse train outputs rated up to 100 kHz for motion control execution.

• How many built-in input points are provided on the base unit?

  The CPU unit integrates 24 discrete 24 VDC inputs directly on its terminal block assembly.

• How is signal line shielding properly grounded on the RS-485 port?

  The RS-485 cable shield must be grounded at a single point using a 360-deg braid clamp connected to functional ground.

• Can the I/O capacity be expanded beyond the base chassis count?

  Yes, the system supports expansion using CP1W series expansion I/O modules connected via the side bus connector.

• What program capacity is available in memory for ladder logic?

  The unit provides 8K steps of user program memory and 8K words of data memory (DM Area).