OVERVIEW

Official designation: Omron CJ1H-CPU66H (CJ1 Series, High-Performance CPU Unit)

Role/Application: A high-speed programmable logic controller (PLC) CPU for the CJ1 series, offering fast instruction execution and large memory capacity for complex, demanding industrial automation systems.

KEY SPECS SUMMARY

Power: 5 VDC 0.99 A (internal)

Interfaces / Ports: RS-232C port, Peripheral port

Indicators: Refer to the latest manufacturer manual.

Operating Temp: 0 to 55 degrees C

Platform / Compatibility: CJ1 Series I/O Units

Limit: 40 Units maximum (3 Racks max)

Lifecycle: Obsolete

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What are the program and data memory capacities for the CJ1H-CPU66H unit?

A: The unit features 120K steps program capacity and 256K words total data memory (32K DM, 7 banks of 32K EM).

Wiring & Installation:

Q: Which power supply units are compatible with the CJ1H-CPU66H CPU module?

A: Compatible power supplies include the CJ1W-PA205R, CJ1W-PA202, or CJ1W-PD025 units.

Troubleshooting & Compatibility:

Q: What is the primary instruction execution speed for the CJ1H-CPU66H in its fastest mode?

A: The basic LD (ladder) instruction execution time is 0.02 microseconds (20 ns).

Replacement & Upgrades:

Q: What is the recommended current successor or replacement model for the obsolete CJ1H-CPU66H?

A: The current recommended replacement for this obsolete unit is the CJ2H-CPU66 model.