Omron — Password Recovery Tool
The most common Omron password locks are found on the CJ (CJ1M, CJ2M), CS (CS1G/H), and CP (CP1E, CP1H) series, programmed via CX-Programmer.
Because there is no single "Omron" branded tool, you must choose based on your hardware series.
| Device Series | Recommended Tool / Method | Cost | Difficulty | Preserves Code? | | :--- | :--- | :--- | :--- | :--- | | CP1E/CP1H | Memory Clear (CX-Programmer) | Free | Low | No | | CJ1M/CS1G | PLC Unlocker Pro (Third Party) | $150-300 | Medium | Yes | | CJ2M | Brute-force via FINS (OmronCrack) | $50 | High | Yes (50/50) | | NJ/NX | Physical Reset via SD Card | Free | Low | No | | NB HMI | NBDesigner + Hex Editor | Free | Medium | Yes | | NA HMI | SQLite DB extraction | Free | High | Yes | Omron Password Recovery Tool
Omron does not publish a “password recovery paper” for obvious security reasons. Instead, they provide:
Key Manuals (search for these titles):
The interface is utilitarian—don't expect polished, modern UI design. It is strictly functional. You typically select your PLC model, the communication port, and click "Unlock" or "Clear Password."
Specialized industrial cybersecurity firms offer password removal as a service. They use proprietary hardware or software to extract or reset the password. This is the safest non-Omron route, as they often provide guarantees against data loss. The most common Omron password locks are found
Physical Reset (Factory Default via SD Card):
Omron Technical Support (Proof of Ownership required): Omron does not publish a “password recovery paper”
