OVERVIEW

Official designation: Omron CJ1G-CPU42H (CJ1, PLC CPU Unit)

Role/Application: A standard performance CPU module in the CJ-series for medium to large machine control, supporting up to 960 I/O points and structured programming.

KEY SPECS SUMMARY

Power: 0.08 A at 5 V DC

Interfaces / Ports: RS-232C, peripheral port

Indicators: PLC status, memory card LEDs

Operating Temp: 0 degrees C to 55 degrees C

Platform / Compatibility: Omron CJ Series PLCs

Limit: 960 I/O points, 30 units max

Lifecycle: Discontinued, replacement is CJ2M-CPU12

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What are the program and data memory capacities of the CJ1G-CPU42H PLC unit?

A: The unit features 10K steps program capacity and 64K words data memory capacity.

Wiring & Installation:

Q: What is the primary method for mounting the CJ1G-CPU42H unit within a control panel?

A: The unit is designed for simple mounting on a standard DIN rail.

Troubleshooting & Compatibility:

Q: Which Omron software package is required for programming and system configuration of the CJ1G-CPU42H?

A: The Omron CX-One Integrated Tool Package is used for full support and configuration.

Replacement & Upgrades:

Q: What is the recommended upgrade path for the discontinued CJ1G-CPU42H and what changes are involved?

A: The recommended replacement is the CJ2M-CPU12, requiring minor changes to programming and system settings.