Omron CJ2M-CPU12 CJ Series PLC CPU Unit 10K Steps RS-232C USB

Omron CJ2M-CPU12 is a modular programmable logic controller CPU unit from the SYSMAC CJ series. 10K steps program capacity, 32K words data memory (DM), and 32K words × 1 bank extended memory (EM). Maximum 2,560 I/O points and up to 3 expansion racks. Built‑in RS‑232C serial port and USB programming port for flexible connectivity. Replacement for discontinued CJ1M-CPU12, offering higher I/O capacity while retaining compatibility with existing CJ1 power supply and I/O modules.

Applications:

• Packaging machinery control and sequencing

• General machine automation and OEM equipment

• Material handling and conveyor systems

• Manufacturing line control and monitoring

Core Specifications:

• Program capacity: 10 K steps

• Data memory (DM): 32 K words

• Extended memory (EM): 32 K words × 1 bank

• LD instruction execution time: 0.04 µs

• Total I/O capacity: 2,560 points / 40 units

• Expansion racks: 3 racks max.

• Built‑in communication ports: RS‑232C serial port, USB programming port

• Power supply: external power supply unit required (sold separately)

• Mounting: DIN rail

• Certifications: CE, cULus, NK, Lloyd

Advanced Specifications:

• Current consumption: 5 V DC, 0.7 A

• Processing time (1K binary operation): 0.04 ms

• Memory size: 284 kByte (approx. 64K words)

• Number of HW interfaces: USB ×1, RS‑232 ×1

• Battery backup: yes

• Serial option module: supports RS‑232C or RS‑422A/485 via option board (CJ2M-CPU3@)

• Dimensions (W × H × D): 31 mm × 90 mm × 84.5 mm

• Weight: approx. 130 g

• Operating temperature: 0 °C … 55 °C

System Integration:

• This CPU unit belongs to the Omron SYSMAC CJ series.

• Programming and configuration performed using CX‑Programmer (version 9.1 or higher).

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

• Expands with CJ series I/O and Special I/O Units via the CJ I/O bus.

• Requires a CJ series power supply unit (e.g., CJ1W‑PA202, CJ1W‑PA205R) and optionally a backplane for multi‑rack configurations.

Related Products:

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

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

• CJ1W‑ID211 – 16‑point DC input unit, screw terminal

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

• CJ1W‑OC211 – 16‑point relay output unit

• CJ1W‑CIF11 – RS‑485 adapter for serial port expansion

• CX‑One – Software suite including CX‑Programmer for configuration and programming