OMRON CP series CP1E CPU unit

OMRON CP series CP1E CPU unit

The specification sheet for OMRON CP series CP1E CPU units covers three major series: E-based, N-application, and NA analog. It provides 10/14/20/30/40/60 point I/O configuration, supports USB/RS-232C/RS-485 communication, high-speed counting (up to 100kHz), pulse output (up to 100kHz), PID control, and can expand up to 3 CP1W modules. The program capacity is 2K~8K steps, and the NA type has built-in 2-in-1 analog quantity, suitable for simple automation, positioning control, and small device logic control. The programming software is CX Programmer.

Product series and positioning

CP1E is divided into three major series, with clear positioning:

E-type (basic type): economical type, basic logic control, 2K steps, simple I/O.

N-type (application type): High performance, 8K steps, high-speed counting, pulse output, multiple serial ports.

NA type (analog type): Built in 2-in-1 analog quantity, suitable for temperature/pressure/flow closed-loop.

Model and I/O specifications

Series I/O point program capacity analog expansion capability

E 10/14/20/30/40/60 2K steps can be expanded by 3 units without partial expansion

N 14/20/30/40/60 8K steps without expandable 3 units

NA 20:8K steps 2 in 1 out can expand 3 units

Power supply and output type

Power supply: AC100~240V/DC24V

output:

R: Relay (2A, universal strong current)

T: NPN leakage type

T1: PNP source type

Core motor control ability

High-speed counter

N-type: 2-axis x 100kHz

E-type: 6-axis x 10kHz

Pulse output (transistor type only)

2-axis x 100kHz

Support: Pulse+direction, origin search, trapezoidal acceleration and deceleration

PWM output: 32kHz, adjustable duty cycle.

Communication interface

USB: standard across the entire series, directly connected to CX Programmer.

RS-232C: N/NA built-in, supports Host Link and NT Link.

RS-485: N30/40/60 S1 built-in, supports Modbus RTU.

Ethernet: N/NA can plug CP1W-CIF41 (V2.0 or above).

Scalability (up to 3 units)

Support CP1W series expansion:

Digital I/O: 8/16/20/32/40 points

Analog quantities: AD041/AD042, DA021/DA041, MAD44

Temperature: TS001/002 (thermocouple) TS101/102（Pt100）

Communication: CompoBus/S, RS485 board

Memory and Backup

E-type: DM 2K words, built-in EEPROM backup.

N/NA type: DM 8K word, supports CP1W-BAT01 battery backup (5 years).

Power outage maintenance: DM area can be set to automatically backup.

Programming and Software

Software: CX Programmer (V8.2 or above).

Instructions: Logic, timed counting, motion control PID、 Floating point, communication.

Task: 1 loop task+interrupt task.

Key issues

Question 1: What is the core difference between E-type and N-type CPUs?

answer:

E-type: 2K program, basic instructions, no high-speed pulses, few/no extensions, economical.

N-type: 8K program, 100kHz high-speed counting+pulse output RS‑232C/485、 Plug in Ethernet/analog board, high-performance.

Question 2: How many expansion modules can CP1E carry at most? Which models cannot be expanded?

answer:

Up to 3 CP1W expansion modules can be included.

Cannot expand: E10/E14/E20 (S), N14/N20.

Scalable: E30/40/60 (S), N30/40/60 (S @), NA20.

Question 3: What is the built-in analog specification of NA type? What scene is suitable?

answer:

Specification: 2 analog inputs+1 analog output, resolution 1/6000, range 0~10V/4~20mA.

Scenario: Temperature, pressure, flow rate, liquid level acquisition and PID closed-loop control, without the need for additional analog modules.