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Omron CJ2M-CPU31 PLC CPU Module

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Omron CJ2M-CPU31

by Omron

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OverviewElevate your industrial control systems with the Omron CJ2M-CPU31 PLC CPU Module, a compact yet powerful central processing unit meticulously engineered for outstanding performance across various industrial settings. As a core component of the respected CJ2M series, this CPU module offers an impressive combination of 5,000 program steps, a generous 64K words of data storage, and a rapid 160-nanosecond execution time per basic instruction. Designed for effortless integration, it incorporates built-in Ethernet/IP, multiple serial communication options, and a convenient USB programming port, ensuring broad connectivity and straightforward system interaction. The CJ2M-CPU31 is an optimal solution for small to medium-scale automation projects, providing the dependability and expandability that Omron is recognized for, while maintaining full compatibility with both CJ1 and CJ2 expansion modules.Key Features Program Capacity: 5,000 steps for comprehensive logical control. Data Memory: 64K words for extensive data retention and processing. Execution Speed: Ultra-fast 160 ns per basic instruction, guaranteeing responsive control. Integrated Ethernet/IP Port: For high-speed network communication and smooth integration into modern industrial networks. Communication Ports: Two built-in serial ports (RS-232C/422A/485 selectable) for flexible device connections. USB Programming Port: Onboard USB Mini-B for simple programming and configuration. Expandable I/O: Supports up to 2560 I/O points and 40 I/O units, enabling scalable system designs. Cycle Time Monitor: Essential for real-time performance optimization and system diagnostics. Battery Backup: Ensures critical program and data preservation during power interruptions, enhancing system integrity. Technical Specifications Model Number: CJ2M-CPU31 Series: CJ2M Program Memory: 5K steps Data Memory: 64K words Communication Ports: 1 x Built-in Ethernet/IP Port 2 x Serial Ports (RS-232C/422A/485 selectable) 1 x USB Port (Mini-B) Execution Time: Approximately 160 ns/step (LD instruction) I/O Capacity: Up to 2560 points Max Number of Units: 40 Operating Temperature: 0°C to +55°C Storage Temperature: -20°C to +75°C Mounting Type: DIN rail or panel Weight: Approximately 0.25 kg Certifications: CE, UL, RoHS ApplicationsThis versatile PLC CPU module is suited for a range of industrial applications: Compact Machine Control: Perfectly designed for small to medium-sized machinery demanding precise and dependable automation. Material Handling Systems: Ideal for managing conveyor belts, sorting mechanisms, and robotic handlers in logistics and manufacturing environments. OEM Equipment Integration: Provides a robust and adaptable control solution for original equipment manufacturers embedding automation within their products. Industrial Communication Hub: Facilitates seamless integration with a wide variety of sensors, Human Machine Interfaces (HMIs), and variable frequency drives (VFDs) through its flexible communication ports. Process Control: Capable of overseeing and monitoring diverse process automation tasks in lighter industrial settings. Why Choose This Model?The Omron CJ2M-CPU31 stands out as an exceptional selection for numerous compelling reasons. Its inclusion of an Ethernet/IP port ensures state-of-the-art network connectivity, vital for contemporary Industry 4.0 applications and efficient data exchange. This CPU module delivers outstanding performance at an accessible cost, making it a sound investment for expanding or upgrading your automation capabilities without sacrificing quality or reliability. Its modular architecture, supporting both CJ1 and CJ2 expansion units, guarantees future-proof scalability, allowing your system to adapt to evolving operational demands. The intuitive USB programming port significantly simplifies setup and maintenance, reducing commissioning time and engineering effort. Furthermore, Omron's reputation for producing highly reliable and durable industrial components means the CJ2M-CPU31 is engineered for long-term, stable operation in demanding industrial environments.Order NowEnhance your industrial automation infrastructure today with the Omron CJ2M-CPU31 PLC CPU Module. Contact Palm Parts Solution to inquire about pricing and availability, or to discuss your specific application needs with our expert team.FAQWhat types of applications is the Omron CJ2M-CPU31 best suited for?The CJ2M-CPU31 is optimally suited for small to medium-sized automation tasks, including compact machine control, material handling systems, OEM equipment integration, and various process control scenarios. Its robust features and flexible communication options make it adaptable to a wide range of industrial environments.Does the CJ2M-CPU31 support expansion modules?Yes, the Omron CJ2M-CPU31 is fully compatible with both CJ1 and CJ2 series expansion modules, offering excellent scalability to meet your evolving system requirements. This modularity allows for easy customization and future-proofing of your automation setup.What communication options are available with this CPU module?The CJ2M-CPU31 is equipped with a built-in Ethernet/IP port for high-speed network communication, two selectable serial ports (RS-232C/422A/485) for versatile device connectivity, and a convenient USB Mini-B port for straightforward programming and configuration.

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PRODUCT DETAILS

Omron CJ2M-CPU31

Overview

This is a genuine Omron component from the Omron PLCs family. PalmPartsSolution stocks it in new, refurbished, and surplus condition with tested warranty and same-day shipping on in-stock units.

Whether you are sourcing a like-for-like replacement for an existing installation, an emergency spare to keep a line running, or a qualified part for a new build, our team can confirm availability, revision, and lead time before you order.

Key Features

  • Genuine Omron catalog part
  • Tested before shipment
  • Backed by PalmPartsSolution warranty
  • Cross-reference and revision assistance available
  • Compatible with the broader Omron automation ecosystem
  • Engineered to integrate inside Omron PLCs installations

Compatibility

When ordering, match the full catalog/part number, hardware revision, and firmware revision called out by your Omron equipment. Where applicable, confirm:

  • Input/output voltage and current rating
  • Communication protocol and network role
  • Mounting form factor and footprint
  • Operating temperature, humidity, and IP rating
  • Required certifications (UL, CE, ATEX, marine, etc.)

Not sure which revision you need? Send us the catalog number on the nameplate and we will confirm the correct match.

Replacement Information

Three ways to source this part through PalmPartsSolution:

  1. Exact replacement — same Omron catalog number, new or refurbished, tested and warrantied
  2. Form-fit-function equivalent — alternate revision or build that drops in without code changes
  3. Engineered migration — current-generation Omron platform with documented conversion notes for the Omron PLCs family

Contact our engineering team if you need help choosing between these tracks.

Technical Specifications

  • Model Number: CJ2M-CPU31
  • Series: CJ2M
  • Program Memory: 5K steps
  • Data Memory: 64K words
  • Communication Ports:
    • 1 x Built-in Ethernet/IP Port
    • 2 x Serial Ports (RS-232C/422A/485 selectable)
    • 1 x USB Port (Mini-B)
  • Execution Time: Approximately 160 ns/step (LD instruction)
  • I/O Capacity: Up to 2560 points
  • Max Number of Units: 40
  • Operating Temperature: 0°C to +55°C
  • Storage Temperature: -20°C to +75°C
  • Mounting Type: DIN rail or panel
  • Weight: Approximately 0.25 kg
  • Certifications: CE, UL, RoHS

Applications

This versatile PLC CPU module is suited for a range of industrial applications:

  • Compact Machine Control: Perfectly designed for small to medium-sized machinery demanding precise and dependable automation.
  • Material Handling Systems: Ideal for managing conveyor belts, sorting mechanisms, and robotic handlers in logistics and manufacturing environments.
  • OEM Equipment Integration: Provides a robust and adaptable control solution for original equipment manufacturers embedding automation within their products.
  • Industrial Communication Hub: Facilitates seamless integration with a wide variety of sensors, Human Machine Interfaces (HMIs), and variable frequency drives (VFDs) through its flexible communication ports.
  • Process Control: Capable of overseeing and monitoring diverse process automation tasks in lighter industrial settings.

Why Choose the CJ2M-CPU31?

The Omron CJ2M-CPU31 stands out as an exceptional selection for numerous compelling reasons. Its inclusion of an Ethernet/IP port ensures state-of-the-art network connectivity, vital for contemporary Industry 4.0 applications and efficient data exchange. This CPU module delivers outstanding performance at an accessible cost, making it a sound investment for expanding or upgrading your automation capabilities without sacrificing quality or reliability. Its modular architecture, supporting both CJ1 and CJ2 expansion units, guarantees future-proof scalability, allowing your system to adapt to evolving operational demands. The intuitive USB programming port significantly simplifies setup and maintenance, reducing commissioning time and engineering effort. Furthermore, Omron's reputation for producing highly reliable and durable industrial components means the CJ2M-CPU31 is engineered for long-term, stable operation in demanding industrial environments.

Availability & Shipping

  • In stock: CJ2M-CPU31 ready for immediate dispatch from our Florida warehouse.
  • Free USA shipping: FedEx Priority (2–5 business days) and UPS Ground (3–5 business days). Expedited options available at checkout.
  • Worldwide delivery: FedEx International Priority (1–5 days), UPS International Priority (3–5 days), and USPS International (5–10 days) — rates calculated at checkout.
  • Bulk pricing: Volume discounts on request — contact our sales team for quantity quotes.
  • Buy with confidence: Every CJ2M-CPU31 ships with a 1-Year PALM Parts warranty and a 30-day return window.
SUPPORT

Frequently Asked Questions — Omron

The CJ2M-CPU31 is optimally suited for small to medium-sized automation tasks, including compact machine control, material handling systems, OEM equipment integration, and various process control scenarios. Its robust features and flexible communication options make it adaptable to a wide range of industrial environments.

Machine down? We ship parts the same day.

New, surplus, and refurbished Omron inventory in stock. Request a quote or speak directly with an automation specialist for emergency sourcing.

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PALM Parts Solution operates as an independent industrial automation supplier and is not an authorized distributor or affiliate of any listed manufacturer or brand name. Manufacturer trademarks and product names are used solely for identification purposes. Original manufacturer warranties do not apply. All products sold by PALM Parts are backed by our own 1-year warranty.

Product Condition & Firmware

All products are sold as new unless stated otherwise. Original manufacturer packaging may show signs of handling, storage, or shelf wear. Date codes and series may vary from current factory production. PALM Parts does not guarantee the presence, version, or compatibility of any firmware on PLC or automation products.

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