CJ2M-CPU11 SYSMAC CJ2M CPU Unit 5K Steps RS-232C USB | Omron

The Original New Omron CJ2M-CPU11 is a compact CPU unit for the SYSMAC CJ series programmable logic controller (PLC) platform, designed for basic machine automation and OEM control systems requiring serial communication. With a program capacity of 5K steps, 32K words of data memory, and 32K words × 1 bank of extended memory (EM), this CPU delivers reliable performance for small-scale automation applications. The integrated USB programming port simplifies connectivity, while the built-in RS-232C serial port enables direct communication with HMIs, barcode readers, and other serial devices. Up to 2,560 I/O points and three expansion racks allow scalable system expansion for packaging machinery, material handling, and general factory automation. This CPU is the recommended replacement for the discontinued CJ1M-CPU21.

⚠️ Important Product Status Note:

This product is scheduled for end of production on June 30, 2027. This product remains available for maintaining existing installations while supplies last. For new designs, please consider the recommended replacement options.

Core Engineering Highlights:
5K steps program capacity (+20K steps function block memory)| 32K words data memory + 32K words × 1 bank EM| 0.04 μs LD instruction execution time| Built-in RS-232C serial port | USB programming port| 2,560 max I/O points / 40 units| 3 expansion racks max| 31 × 90 × 84.5 mm| 130 g weight

Key Features:

• Original New Omron CJ2M-CPU11 CPU unit

• 5K steps program capacity with 0.04 μs LD instruction execution time

• 32K words data memory (DM) plus 32K words × 1 bank extended memory (EM)

• Built-in RS-232C serial port for direct connection to serial devices

• Integrated USB programming port for fast, direct PC connection

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

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

• Supports CJ-series I/O bus architecture

• DIN rail mounting for control cabinet installation

• Real-time clock with battery backup

• CE, cULus, NK, Lloyd's certified

• RoHS compliant

• Replacement for discontinued CJ1M-CPU21

Applications:

• Small 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

• Systems requiring RS-232C serial communication for HMIs, barcode readers, or printers

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

• Direct replacement for CJ1M-CPU21

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

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

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

• 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)

• CJ1W-ID211 – 16-point DC input unit

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

• CJ1W-OC211 – 16-point relay output unit

• CS1W-CIF31 – USB to RS-232C converter cable

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.