| Brand | Legitimate Password Recovery Method | |--------|--------------------------------------| | | Use “Reset to Factory Settings” via MMC card (clears program + password). For S7-1200/1500, contact Siemens support with proof of ownership. | | Rockwell | Use “FactoryTalk Security” recovery utility or clear memory via CF card. No public master password exists. | | Schneider | Use SoMachine / EcoStruxure Machine Expert’s “Reset” function (requires full program reload). | | Mitsubishi | Clear PLC memory via “Format PLC” in GX Works (program lost, password removed). | | Omron | Use “Clear All Memory Areas” option in CX-Programmer (requires upload protection disabled beforehand). |
: Default highest security password is often 12345678 . Common Manufacturers Supported by "Key" Tools all plc and hmi password key v23 best
: Many devices ship with standard factory passwords like 12345678 (Delta), 111111 ( Maple Systems ), or click ( AutomationDirect ). | Brand | Legitimate Password Recovery Method |