For DOP-100 series HMIs (DOP-107, DOP-110, DOP-115, etc.), Delta introduced a recovery mechanism that requires physical access and a USB drive.
Steps:
After this, you can upload a new project. But if you had no backup, the HMI becomes blank. unlock delta hmi password
Delta’s DOPSoft (a configuration tool for DOP-xxMseries HMIs) can aid in password recovery if the original project file is available:
For newer models (e.g., DOP-xxExx, DOP-xxBxx), Delta’s HMI Designer or Delta Smart Designer tools may offer similar functionality. Visit the Delta website for software downloads and guides. For DOP-100 series HMIs (DOP-107, DOP-110, DOP-115, etc
Once you regain access, follow these best practices:
Before attempting any reset, test the factory defaults. Delta HMIs often ship with one of these: After this, you can upload a new project
| Username (if prompted) | Password | |-----------------------|----------| | (blank) | (blank) | | (blank) | 111111 | | ADMIN | 111111 | | admin | (blank) |
Delta does not provide a backdoor “master password” for security reasons. However, they offer several official recovery routes depending on the HMI model and firmware version.