CJ2M-CPU34 SYSMAC CJ2M CPU Unit 30K Steps EtherNet/IP | Omron

The Original New Omron CJ2M-CPU34 is a high-performance CPU unit for the SYSMAC CJ series programmable logic controller (PLC) platform, featuring a built‑in EtherNet/IP port for seamless network integration. With a program capacity of 30K steps, 32K words of data memory, and 32K words × 4 banks of extended memory (EM) for a total data memory of 160K words, this CPU is engineered for medium to large‑scale machine automation and OEM control systems. The integrated USB programming port simplifies connectivity, while the option board slot supports RS‑232C or RS‑485 serial communication modules for flexible field device integration. Up to 2,560 I/O points and three expansion racks allow scalable system expansion for packaging machinery, material handling, and general factory automation.

⚠️ Important Product Status Note:

This product is scheduled for end of production on March 31, 2027. This product remains available for maintaining existing installations while supplies last. For new designs, please consider the recommended replacement options.

Core Engineering Highlights:
30K steps program capacity + 20K steps function block capacity | 160K words total data memory (32K DM + 32K EM × 4 banks) | 0.04 μs LD instruction execution time | Built‑in EtherNet/IP port (EtherNet/IP tag data links, FINS/TCP, FINS/UDP) | 2,560 max I/O points / 40 units / 3 expansion racks max | Option board slot for RS‑232C or RS‑485 serial communication | USB programming port | 5 V DC backplane power (0.7 A) | 62 × 90 × 84.5 mm | 190 g weight

Key Features:

• Original New Omron CJ2M-CPU34 CPU unit

• Built-in EtherNet/IP port supports tag data links and message communications

• 30K steps program capacity with 0.04 μs LD instruction execution time

• 32K words data memory (DM) plus 32K words × 4 banks extended memory (EM) — total 160K words data memory

• Supports up to 2,560 I/O points and 40 units with 3 expansion racks max

• Integrated USB programming port for fast, direct PC connection

• Option board slot for RS-232C (CP1W-CIF01) or RS-422A/485 (CP1W-CIF11/CIF12-V1) serial communication modules

• Compatible with all existing CJ1 power supply, I/O, control, and communication units for easy migration

• Supports CJ-series I/O bus architecture

• Dedicated function block memory ensures efficient execution of function block software modules

• DIN rail mounting for control cabinet installation

• Battery backup for program and data retention

Applications:

• Medium to large-scale machine automation and control systems

• Packaging machinery and OEM equipment

• Material handling and conveyor systems

• Factory automation and production line control

• Process monitoring and data acquisition

• Applications requiring extended memory (4 banks EM) for complex data handling

Technical Specifications:

System Compatibility:

• Compatible with SYSMAC CJ series I/O units, Special I/O Units, and CPU Bus Units

• Uses CJ-series I/O bus

• Mounts on CPU rack (CJ1W-BC series) with CJ1W-PA or CJ1W-PD series power supply

• Supports CJ1W-IC101 I/O control unit for multi-rack configurations

• Option board slot compatible with CP1W-CIF01 (RS-232C), CP1W-CIF11/CIF12-V1 (RS-422A/485)

• Programming software: CX-Programmer (CX-One) / Sysmac Studio

Related Products:

• CJ1W-PA205R – Power supply unit, 100-240 V AC, 25 W, with RUN output

• CJ1W-PA202 – Power supply unit, 100-240 V AC, 14 W

• CJ1W-PD025 – Power supply unit, 24 V DC, 25 W

• CJ1W-PD022 – Power supply unit, 24 V DC, 19.6 W

• CJ1W-IC101 – Expansion I/O control unit, connects to right side of CPU

• CJ1W-II101 – Expansion I/O interface unit, up to 3 expansion racks

• CP1W-CIF01 – RS-232C option board for serial communication

• CP1W-CIF11 – RS-422A/485 option board (non-isolated)

• CP1W-CIF12-V1 – RS-422A/485 option board (isolated, 500 m max)

• CJ2M-MD211 – Pulse I/O module for CJ2M (NPN)

• CJ2M-MD212 – Pulse I/O module for CJ2M (PNP)

• CJ1W-ID211 – 16-point DC input unit

• CJ1W-OD212 – 16-point PNP transistor output unit

• CJ1W-OC211 – 16-point relay output unit

PLC ERA is an independent industrial automation distributor supplying genuine Original New products through established global supply channels. All products are factory sealed when applicable and undergo quality inspection prior to shipment. Omron and SYSMAC are trademarks of Omron Corporation.