Configured for high-speed logic execution and industrial network integration in CJ2M industrial control systems, the Omron CJ2M-CPU32 (CJ2M-CPU32 CPU Module) provides direct physical/electrical execution.

Technical Identifier Matrix

• Base Part Number: CJ2M-CPU32
• Series Platform: CJ2M Series
• Product Classification: CPU Unit Pulse I/O Module
• Communication Interfaces: Built-in EtherNet/IP, Ethernet TCP/IP, USB 2.0

Hardware Specifications

EtherNet/IP Determinism and Backplane Bus Velocity

The Omron CJ2M-CPU32 incorporates an integrated EtherNet/IP protocol engine that offloads industrial network communication overhead from the primary instruction processor. This configuration yields deterministic data transmission over EtherNet/IP and Ethernet TCP/IP networks without degrading the core 0.04 us logic execution speed.

The backplane bus interface supports dynamic expansion up to 40 expansion units and direct addressing for 2560 local I/O points. Flash firmware compatibility allows system updates while maintaining synchronization across local bus modules and optional Pulse I/O option boards.

Package Contents & Ordering Information

• 1x Omron CJ2M-CPU32 Unit
• 1x CJ1W-BAT01 Backup Battery
• 1x Peripheral USB Port Connector Cover
• 1x Instruction Manual Sheet

Field Installation Guidelines

• Cabinet Mounting: Install the CPU unit onto a standard 35 mm DIN rail inside an IP54-rated metal enclosure. Provide at least 30 mm vertical spacing above and below the module for passive convective thermal dissipation.
• Backplane Interconnection: Slide the unit horizontally into the adjacent CJ-Series power supply module until the top and bottom locking levers click firmly into position.
• Grounding Requirements: Connect a dedicated ground wire (minimum 2.0 mm sq.) to the functional ground (FG) terminal on the power supply module. Ensure total grounding path resistance measures less than 100 ohm.
• EtherNet/IP Cabling: Route Category 5e or Category 6 STP cables away from high-voltage motor conductors. Connect the RJ45 shield ground to the cabinet single-point ground system using 360-deg braid shielding techniques.

Frequently Asked Questions

• What is the primary execution time for standard logic instructions on the CJ2M-CPU32?

  The CPU executes basic logical instructions at a speed of 0.04 us per instruction word.

• What communication interfaces are integrated directly into the CPU front panel?

  The module includes built-in EtherNet/IP and Ethernet TCP/IP RJ45 ports along with a peripheral USB port for programming access.

• How many total local I/O points and expansion units can be driven by this CPU?

  The unit controls up to 2560 local I/O points and supports connection to a maximum of 40 expansion units across the backplane bus.

• What is the program capacity and internal data memory space provided?

  The processor provides a total user program capacity of 30K steps and a data memory capacity of 64K words.

• Does the CJ2M-CPU32 include built-in digital inputs or outputs directly on the base unit?

  No, the CJ2M-CPU32 contains 0 built-in digital I/O points. Additional digital or pulse I/O capabilities require expansion option boards or standard CJ-Series I/O units.

• What is the operating current load drawn on the internal backplane 5 VDC supply rail?

  The CPU module consumes approximately 0.50 A at 5 VDC directly from the rack system power supply module.

• Can the CJ2M-CPU32 CPU module be replaced while the backplane power supply is energized?

  No, power to the rack must be switched off before removing or installing the CPU module to prevent permanent damage to backplane bus contacts.

• What grounding resistance threshold is required for industrial cabinet installations?

  The single-point functional ground line must be grounded with an earth resistance of less than 100 ohm.