Recent updates in the automation community have introduced tools designed to handle the latest firmware on the DVP-ES2 , EH3 , and SS2 series. 1. Delta PLC Password Tool 1.0 (2025/2026 Edition)
If you cannot find a specific software tool for your model, these standard methods are still the most reliable:
Regaining access to your Delta PLC in 2026 is easier than before thanks to refined recovery tools for the DVP series. While utilities from plc247.com and Delta PLC Password Tool 1.0 offer quick fixes, always prioritize ethical access and safeguard your systems against the malware often hidden in "free" crack files.
: You can often clear the password by performing a factory reset through WPLSoft. However, this will erase the program inside the PLC 15.4 . Only use this if you have a backup of the original code.
Before attempting an unlock, it is essential to identify the type of lock you are facing. Delta’s WPLSoft and ISPSoft utilize different security tiers:
: Most unlock software requires a stable connection via RS-232, RS-485 , or Ethernet using Delta’s DCISoft for initial communication configuration 1.1.1. ⚠️ A Note on Cybersecurity
This is a lightweight utility often used by authorized engineers to organize and standardize passwords across multiple Delta projects. While its primary role is credential management , some updated versions found on community forums like Software Informer are designed to assist in recovery for the DVP series.
: Locks the local software project file on your PC.
: Authorized technicians who need to streamline access to multiple machines. Compatibility : Windows 10 and 11. 2. PLC247 & PLCHMIServo Custom Tools
What specific (e.g., DVP-SS2, EH3, ES2) are you currently trying to unlock?