If the PLC has high-level protection, it may still prompt for a password. In this case, use the password string clear PLC (all caps for PLC) to attempt a wipe. Memory Card Reset:
of the CPU. This deletes the program and the password, allowing you to download a new project and set a new password. Know-How Protection: siemens s7 200 smart password unlock work
This is the standard manual method used when you have a connection to the PLC but no password. STEP 7-Micro/WIN SMART , navigate to the PLC > Clear Requirement: Check all boxes (Program Block, Data Block, System Block). Unlock Command: When prompted for a password, enter (not case-sensitive). If the PLC has high-level protection, it may