Once you have bypassed the CPU password, you might still face programs with Know-How Protection. For this, tools exist specifically to unlock protected code blocks, allowing you to view and edit the logic inside OB, FB, FC, and DB blocks.
If the password is unknown, go to the "Device" menu and select "Reset password." Follow the on-screen instructions to reset the password to its default value. unlock password plc siemens s7 300 rarl better
No. If you have the correct password for that specific block, you can remove the protection from within the SIMATIC Manager by right-clicking on the block, selecting "Properties," and entering the password to unlock it. Without the password, you cannot remove Know-How Protection via official means and must use a third-party "Block Unlocker" tool. Once you have bypassed the CPU password, you