Omron CJ1G-CPU42H Programmable Logic Controller
Omron CJ1G-CPU42H Programmable Logic Controller (PLC) is a compact CPU unit designed for mid-level sequence control applications. It supports up to 960 I/O points across 2 expansion racks with 30 units, making it suitable for modular machines, process automation, and industrial equipment. Featuring 10K-step program capacity and 64K words of data memory (DM: 32K words, EM: 32K words × 1 bank), it delivers reliable logic and data operations. Fast 0.04 μs LD instruction execution ensures responsive control, while 0.91 A at 5 V operation provides stable performance. Manufactured by Omron, this model belongs to the Omron Programmable Controllers family and the CJ1 Series used in industrial automation.
| Brand | Omron |
| Product Type | Programmable Logic Controller |
| Model Number | CJ1G-CPU42H |
| Specification | Value |
|---|---|
| Program capacity | 10K steps |
| Data area memory capacity | 64K words (DM: 32K words, EM: 32K words, × 1 bank) |
| Control method | Stored program |
| I/O control method | Cyclic scan and immediate processing are both possible |
| Programming | LD (Ladder), SFC (Sequential Function Chart), ST (Structured Text), Mnemonic |
| LD execution time | 0.04 μs |
| I/O capacity | 960 points |
| Mountable Units | 30 points |
| Mounting method | DIN Track |
The Omron CJ1G-CPU42H is built for industrial automation systems that require reliable sequence control with a high I/O count. Its 960 I/O points, expandable across 2 racks, allow seamless interfacing with sensors, actuators, and machine modules. The fast instruction execution time and ample program/data memory make it ideal for modular machines, process lines, and medium-scale factory automation requiring responsive and stable control.
Omron CJ1G-CPU42H is widely deployed in manufacturing, packaging, and assembly lines where mid-level logic and data handling are critical. Its compact CPU design supports efficient panel integration, organized wiring, and easy accessibility for installation and maintenance. Many system integrators prefer this model because it balances high I/O capacity with compact size, enabling flexible expansion within existing Omron PLC architectures.
Reliable power consumption, stable operation, and robust construction make CJ1G-CPU42H suitable for continuous industrial use under demanding conditions. Maintenance engineers benefit from its straightforward layout and modular design, while OEMs, automation companies, and industrial buyers select this Omron PLC unit for projects requiring high I/O count, dependable mid-level control, and long-term operational reliability in compact automation systems.
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