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CJ3M-CPU3[] / -CPU1[] / CJ2M-MD21[]

CJ3M-CPU3[] / -CPU1[] / CJ2M-MD21[]

CJ-series CJ3M CPU Units, Pulse I/O Modules

CJ3M-CPU3[] / -CPU1[] / CJ2M-MD21[]

CJ Series continues. And evolves. Ideal for basic equipment upgrades and expansion

Features
Lineup
Specifications
Dimensions
Catalog / Manual / CAD / Software

Catalog
Manual
CAD

English

Global Edition

Please note some product models not sold in Singapore may be included in the following manual(s) for our global customers.

*It is recommended to select “Save” from the right-click due to large size of manual PDF data.

*The manual which name begins with "Instruction Sheet" is a simplified manual supplied with the product.
Type All Clear	Manual Name	Catalog Number [size]	Last Update
Manual	CJ3M-CPU[][] CPU Unit User's Manual (Hardware)	W664-E1-01 [9223KB]	Oct 01, 2026 20261001	0010 030_Manual	CJ3M-CPU[][] CPU Unit User's Manual (Hardware)
Manual	CJ3M-CPU[][], CJ2H-CPU6[](-EIP), CJ2M-CPU[][] CPU Unit User's Manual (Software)	W473-E1-16 [7898KB]	Oct 01, 2026 20261001	0010 030_Manual	CJ3M-CPU[][], CJ2H-CPU6[](-EIP), CJ2M-CPU[][] CPU Unit User's Manual (Software)
Manual	CJ3M-CPU[][]/CJ2M-CPU[][]/MD21[] CPU Unit User's Manual (Pulse I/O Module)	W486-E1-03 [2800KB]	Oct 01, 2026 20261001	0010 030_Manual	CJ3M-CPU[][]/CJ2M-CPU[][]/MD21[] CPU Unit User's Manual (Pulse I/O Module)
Manual	C[]1W-EIP21(S), CJ2H-CPU6[]-EIP, CJ2M-CPU3[], CJ3M-CPU3[] EtherNet/IP™ Units Operation Manual	W465-E1-16 [11457KB]	Oct 01, 2026 20261001	0010 030_Manual	C[]1W-EIP21(S), CJ2H-CPU6[]-EIP, CJ2M-CPU3[], CJ3M-CPU3[] EtherNet/IP™ Units Operation Manual
Manual	CS/CJ/CP/NSJ Series Communications Commands Reference Manual	W342-E1-19 [3117KB]	Oct 01, 2026 20261001	0010 030_Manual	CS/CJ/CP/NSJ Series Communications Commands Reference Manual
Manual	CS/CJ/NSJ Series Programmable Controllers Instructions Reference Manual	W474-E1-14 [21645KB]	Oct 01, 2026 20261001	0010 030_Manual	CS/CJ/NSJ Series Programmable Controllers Instructions Reference Manual
Technical Guide	C200H → CJ3, CJ2 Replacement Guide	P073-E1-04 [1566KB]	Oct 01, 2026 20261001	0020 032_Technical Guide	C200H → CJ3, CJ2 Replacement Guide
Technical Guide	C200HS → CJ3, CJ2 Replacement Guide	P074-E1-05 [1286KB]	Oct 01, 2026 20261001	0020 032_Technical Guide	C200HS → CJ3, CJ2 Replacement Guide
Technical Guide	C200HX, C200HG, C200HE → CJ3, CJ2 Replacement Guide	P075-E1-06 [1463KB]	Oct 01, 2026 20261001	0020 032_Technical Guide	C200HX, C200HG, C200HE → CJ3, CJ2 Replacement Guide
Technical Guide	CJ1M, CJ1G → CJ3M, CJ2M Replacement Guide	P068-E1-04 [1147KB]	Oct 01, 2026 20261001	0020 032_Technical Guide	CJ1M, CJ1G → CJ3M, CJ2M Replacement Guide
Technical Guide	CJ2M → CJ3M Replacement Guide	P178-E1-01 [1919KB]	Oct 01, 2026 20261001	0020 032_Technical Guide	CJ2M → CJ3M Replacement Guide
Technical Guide	CJ3M-CPU[][], CJ2M-CPU[][], CJ2H-CPU6[](-EIP), CS1G/H-CPU[][]H Practices Guide Expansion Interconnection	P172-E1-02 [1908KB]	Oct 01, 2026 20261001	0020 032_Technical Guide	CJ3M-CPU[][], CJ2M-CPU[][], CJ2H-CPU6[](-EIP), CS1G/H-CPU[][]H Practices Guide Expansion Interconnection
Technical Guide	CQM1(H) → CJ3M, CJ2M Replacement Guide	P087-E1-04 [2326KB]	Oct 01, 2026 20261001	0020 032_Technical Guide	CQM1(H) → CJ3M, CJ2M Replacement Guide
Technical Guide	CS1G, CS1H → CJ3, CJ2 Replace Guide	P164-E1-04 [13459KB]	Oct 01, 2026 20261001	0020 032_Technical Guide	CS1G, CS1H → CJ3, CJ2 Replace Guide
Technical Guide	Security Guideline for CS/CJ/CP-series CPU Unit	P176-E1-02 [722KB]	Oct 01, 2026 20261001	0020 032_Technical Guide	Security Guideline for CS/CJ/CP-series CPU Unit
Technical Guide	CV, CVM1 → CJ3, CJ2 Replacement Guide	P077-E1-02 [1591KB]	Oct 01, 2026 20261001	0020 032_Technical Guide	CV, CVM1 → CJ3, CJ2 Replacement Guide
Technical Guide	EtherNet/IP and Ethernet Units → Enhanced Security Units Replacement Guide	P152-E1-04 [6247KB]	Oct 01, 2026 20261001	0020 032_Technical Guide	EtherNet/IP and Ethernet Units → Enhanced Security Units Replacement Guide

Product Category

Automation Systems
- Programmable Controllers
  - CJ3
    - CPU Units
      - CJ3M-CPU3[] / -CPU1[] / CJ2M-MD21[]

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