You're looking for information on how to unlock an S7-200 Smart device, specifically if you've forgotten the password.
If you do not have the password and do not need to retrieve the existing program, the only official method supported by Siemens is to completely wipe the CPU. s7-200 smart password unlock
This removes the password restriction, but it completely erases all user programs, data blocks, and system blocks stored in the PLC. You're looking for information on how to unlock
Locked out of your ? It’s a classic automation headache: you’ve got a machine to fix, but the original programmer is long gone, and the CPU is staring back at you with a password prompt. Locked out of your
When you're locked out of a Siemens S7-200 SMART PLC , the standard way to regain access is by resetting the hardware to its factory defaults. Note that this erases the existing program
, you can create a "Reset to Factory Default" memory card using a standard MicroSDHC card.