Some Delta TP series HMIs (e.g., TP04G-BL-C) accept a universal reset code: . Entering this code clears the password and internal programs, returning the device to factory settings. Caution is strongly advised when using this feature.
While the temptation to download a third-party cracking tool is high, doing so introduces severe risks to your industrial equipment, cybersecurity, and intellectual property. The Reality of Third-Party "Unlock" Software delta plc password unlock software link
Delta provides official recovery procedures for : Some Delta TP series HMIs (e
Connect your PC, open WPLSoft , go to Controller → Clear → All to wipe the memory and password. 2. Contact Delta Technical Support While the temptation to download a third-party cracking
If the lockout occurs on a highly critical system and the original programmer cannot be reached, contact Delta Electronics technical support directly. Authorized Delta distributors and corporate engineers have proprietary diagnostic tools. If you can provide legal proof of equipment ownership, they may be able to assist in safely recovering or resetting the unit without destroying your operational data. Best Practices for Future PLC Security Management
If you’re the rightful owner or system integrator and have lost access, here are proper steps:
Using proprietary factory master keys, technicians can clear the memory or retrieve files without damaging the hardware. 2. Older Delta DVP Series (DVP-ES, EX, SS, SA, SX)