Omron CJ2M-CPU11 CPU Unit

Series#: Omron

Product Details

OMRON CJ2M-CPU11 / CJ2M-CPU31 – High-performance PLC CPU Units from the renowned CJ-Series, designed for compact yet powerful automation control.
Offers 5K steps user memory (CJ2M-CPU11) and full I/O capacity of 2,560 bits, ideal for mid-range applications.
Supports up to 40 Units per PLC system, including 3 expansion racks, providing scalable flexibility.
Equipped with a rich memory architecture including 8,192-bit Work Area, 4,096 timers, and 4,096 counters, all independent.
Features three operating modes (PROGRAM, MONITOR, RUN) for safe commissioning and online debugging.
Compatible with 128 MB, 256 MB, or 512 MB Memory Cards for program backup and data logging.
Guaranteed 100% Original factory condition, offering fast and secure worldwide delivery.

Specification

The OMRON CJ2M-CPU11 and CJ2M-CPU31 are part of the advanced CJ-Series PLC family, engineered for precise and reliable control in industrial automation. These CPU Units integrate a powerful 32-bit RISC processor, ensuring fast execution of ladder logic and structured text programs. With a compact footprint and extensive memory mapping, the CJ2M-CPU11 delivers 5K steps of user program memory, while the CJ2M-CPU31 (identical in core specifications) shares the same 5K step capacity and I/O capabilities. Both models support a wide range of I/O and special function units, making them suitable for applications from packaging lines to material handling systems. Below are the detailed technical specifications derived from the original datasheet.

Item	Specification (CJ2M-CPU11 / CJ2M-CPU31)
User Memory	5K steps
I/O Bits	2,560 bits
Maximum Number of Connectable Units	Total per CPU Rack or Expansion Rack: 10 Units max.; Total per PLC: 40 Units max.
Maximum Number of Expansion Racks	3 max.
Work Area	8,192 bits (512 words): Words W000 to W511 (Cannot be used for external I/O.)
Holding Area	8,192 bits (512 words): Words H000 to H511 (maintains ON/OFF status when PLC is turned OFF or mode changed); Words H512 to H1535: used only for function block instances.
Auxiliary Area	Read-only: 31,744 bits (1,984 words) – Words A0 to A447; Read/write: 16,384 bits (1,024 words) in words A448 to A1471; Additional: 24,576 bits (1,536 words) – Words A10000 to A11535
Temporary Area	16 bits: TR0 to TR15
Timer Area	4,096 timer numbers (T0000 to T4095, separate from counters)
Counter Area	4,096 counter numbers (C0000 to C4095, separate from timers)
DM Area	Special I/O Units: D20000 to D29599 (100 words × 96 Units); CPU Bus Units: D30000 to D31599 (100 words × 16 Units)
EM Area	32k words/bank × 4 banks max.: E00_00000 to E3_32767 max.
Index Registers	IR0 to IR15 – for storing PLC memory addresses for indirect addressing (can be unique per task or shared by all tasks)
Cyclic Task Flag Area	128 flags
Memory Card	128 MB, 256 MB, or 512 MB
Operating Modes	PROGRAM, MONITOR, RUN

Processor Architecture: 32-bit RISC CPU for high-speed logic execution and real-time control.
Programming Software: Fully compatible with CX-One, supporting ladder, structured text, and function blocks.
Communication Ports: Built-in USB port for programming; optional Ethernet/IP or serial modules via CJ-series bus.
Power Consumption: Typically 5V DC, 0.5A (from backplane); requires CJ-series power supply unit.
Environmental Ratings: Operating temperature 0°C to 55°C; storage -20°C to 75°C; humidity 10% to 90% non-condensing.
Certifications: CE, UL, cUL, and RoHS compliant.