Power down the HMI/PLC, remove the battery, wait at least 5–10 minutes, and power it back up.
: Any decryption that involves disassembly or hardware modification will void manufacturer warranties.
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Disclaimer: This article is for educational and authorized system administration purposes only. Unauthorized access to industrial control systems may be a crime. Always obtain written permission before attempting any password recovery on equipment you do not personally own.
Launch the password reset tool and select the HMI model from the list of available devices. Power down the HMI/PLC, remove the battery, wait
The best way to regain access is through official channels or authorized procedures to ensure you don't lose data or compromise security.
Based on the information provided in this article, we recommend the following: Unauthorized access to industrial control systems may be
implement role-based access control. Omron NB series HMIs, for instance, support hierarchical user levels where higher-level users can access low-level windows but not vice versa, along with user permissions that control access to specific on-screen components.
Use the design software to perform a .
