The Omron CJ2H-CPU67, also cataloged as the CJ2H-CPU67 Programmable Logic Controller, operates as a dedicated hardware component for high-speed logic execution and instruction processing within Omron CJ2 Series automation networks.

Technical Identifier Matrix

• Base Part Number: CJ2H-CPU67
• Series Architecture: CJ2 Series (CJ2H)
• Product Classification: Central Processing Unit Module
• Execution Architecture: Hardware engine for high-speed basic and special instructions

Hardware Specifications

Backplane Bus Throughput and I/O Density Scaling

The Omron CJ2H-CPU67 interacts with the CJ-Series backplane bus to execute ultra-fast data transfer cycles across local I/O, Special I/O Units, and CPU Bus Units. Achieving basic instruction processing at 0.016 us min. and special instruction processing at 0.048 us min., the module minimizes scan time variation across complex logic configurations.

Bus communication determinism is maintained through a structured 100 us overhead execution pipeline. Current draw on the internal 5 VDC rail is limited to 0.42 A, allowing dense I/O rack expansion without exceeding total backplane power bus allocations. High-density bit memory allocation supports up to 2560 I/O bits and 250K instruction steps for precise cyclic task control.

Package Contents & Ordering Information

• 1x Omron CJ2H-CPU67 Central Processing Unit
• 1x CJ1W-BAT01 Backup Lithium Battery
• 1x Serial Port Protective Cover
• 1x Hardware Installation Sheet

Field Installation Guidelines

• Mounting: Position the unit onto a standard 35 mm DIN rail or panel baseplate within a metal control enclosure. Ensure a minimum 20 mm vertical clearance above and below the housing for heat convection.
• Backplane Assembly: Align the side connectors with adjacent CJ1W power supply or I/O modules. Push the top and bottom slide locks until fully engaged to lock the backplane bus interface.
• Grounding Connection: Run a dedicated grounding wire (minimum 2.0 mm sq.) from the power supply module functional ground (FG) terminal directly to earth ground. Maintain total line resistance below 100 ohm.
• Serial Wiring: Connect serial interfaces using shielded twisted-pair cables with a maximum physical run length of 15 m. Ensure pinouts conform to half-duplex RS-232C standard assignments.
• Cable Shielding: Terminate cable shields directly to the ground lug or metal connector housing to establish a 360-deg braid shield against industrial electromagnetic noise.

Frequently Asked Questions

• What is the current consumption rating for the CJ2H-CPU67 from the backplane power supply?

  The module draws 0.42 A at 5 VDC directly from the internal backplane power bus supplied by the rack power supply unit.

• How fast does the processor execute basic ladder instruction code?

  Basic instructions execute in a minimum time of 0.016 us, while special instructions process in a minimum time of 0.048 us.

• What memory card formats are supported by the integrated external slot?

  The controller supports standard CompactFlash flash memory cards with capacities of 128 MB, 256 MB, or 512 MB.

• Which EM area banks allow force-set and force-reset operations?

  Manual force-setting/resetting covers EM Area Banks 0 through E hex, while automatic address allocation specification uses Banks 7 through E hex.

• What is the maximum permitted distance for the integrated serial communication port?

  The serial interface supports a maximum line length of 15 m using start-stop half-duplex shielded serial cables.

• How many function block instances and definitions can be created in the user program memory?

  The memory structure allows a maximum of 2048 function block definitions and up to 2048 instantiated function block calls.

• Is hot-swapping allowed for the CPU module on an active CJ-Series rack?

  No, power to the CJ-Series backplane power supply module must be disconnected before inserting or removing the CPU unit.

• What is the maximum grounding resistance threshold required for panel installation?

  The grounding connection to the functional ground (FG) terminal must exhibit an electrical earth resistance of less than 100 ohm.