Many Delta models use 12345678 as the default highest security password.
Delta's official stance is that they will not provide bypass tools to end-users to protect the intellectual property of machine builders. However, in some regions, authorized distributors have proprietary recovery tools or firmware re-flashing capabilities that can reset the HMI to factory defaults (erasing all data).
Delta’s ScreenEditor software allows project designers to enable a recovery option. You’ll need the original .dvp or .dpb project file.
If the environment is secure, consider disabling the "Upload Password" in the project settings to allow for easier maintenance.
To protect the entire project file, go to > Password Protect and confirm with "OK". unlock delta hmi password
| Username (if prompted) | Password | |-----------------------|----------| | (blank) | (blank) | | (blank) | 111111 | | ADMIN | 111111 | | admin | (blank) |
Once in the system menu, look for options like Initialize or Clear Memory .
Standard passwords can be forgotten. You can develop a "Recovery String" generator for your project. Technical Tip
Sometimes, system integrators leave Delta HMIs at their factory default settings, or use standard industry codes. Before trying complex resets, test these common default combinations: 1234 123456 12345678 0000 888888 111111 Many Delta models use 12345678 as the default
This tier restricts unauthorized operators from navigating away from the runtime screens or entering the system configuration menu directly on the physical hardware. Upload/Download Passwords
For certain legacy Delta models, a specific master password can be used to completely clear the device's memory. This is a "factory reset" solution that will erase all stored data.
: You can perform a factory reset from within this menu, though this will erase the current project stored on the device. 3. Unlocking Project Files (.dps, .dpa, .dpb)
Forcing exploits or flashing unverified firmware modifications can corrupt the HMI's bootloader, rendering the expensive hardware completely unusable. To protect the entire project file, go to
If the project itself is password-protected for "Upload," you will be prompted for a password. If you don't have this, you cannot retrieve the internal logic without a bypass tool (not officially supported) or a factory reset. 4. Hardware Factory Reset
Always keep a non-protected copy of the .dop source file in a secure cloud or physical drive.
To unlock or manage password features on a Delta HMI, you primarily use the DOPSoft editing software . Depending on whether you are trying to access a locked project or configure security for a new one, you can follow these steps: Common Password Operations