Skip to content

If you have forgotten the password for a Siemens S7-200 SMART PLC Go to product viewer dialog for this item.

Elias, the plant’s veteran lead technician, stared at the Siemens S7-200 SMART PLC through the plexiglass of the control cabinet. The status light was a mocking, steady amber. The original programmer—a contractor who had vanished into a messy legal dispute three years prior—had left the system "locked for maintenance."

If you can still communicate with the PLC but are blocked by a password prompt during upload or download: STEP 7-Micro/WIN SMART menu and select Select the checkboxes for all blocks (Program, Data, and System/Parameter blocks). When the password prompt appears, type

Scroll To Top