OVERVIEW

Official designation: Omron CJ1G-CPU44H (CJ1 Series, Loop-Control CPU Unit)

Role/Application: A high-performance CPU for the CJ-series PLC, integrating a loop controller board for precise process regulation and providing extensive program and data memory capacity.

KEY SPECS SUMMARY

Power: 5 VDC, 0.91 A internal; built-in battery for memory backup

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

Indicators: Power, Run, Error, Peripheral, Memory Card indicators

Operating Temp: 0 to 55 degrees C

Platform / Compatibility: CJ-series PLC, SYSMAC I/O Bus

Limit: 1280 I/O points; 30K steps program capacity

Lifecycle: Discontinued; replaced by CJ2M-CPU14

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What is the CPU processing speed for basic instructions like LD and OUT on the CJ1G-CPU44H?

A: The processing speed for LD and OUT basic instructions is 16 nanoseconds.

Wiring & Installation:

Q: What power supply type is needed for the CJ1G-CPU44H, and what is its mounting requirement?

A: The unit requires a separate CJ-series power supply unit and mounts onto a backplane-free rack structure.

Troubleshooting & Compatibility:

Q: Which software version is needed to use functions added for unit version 4.0 or later on this CPU?

A: CX-Programmer version 7.0 or higher is required to use the functions of unit version 4.0 and later.

Replacement & Upgrades:

Q: What is the recommended model and series for modernization from the discontinued CJ1G-CPU44H?

A: The recommended replacement is the CJ2M-CPU14 in the Omron CJ2M Series, which requires minor system design changes.