In the dialog box, select (this includes the Program Block, Data Block, and System Block).
Use the unlock tool’s "Read PLC Info" function. If the tool can see the CPU model, firmware version, and serial number, communication is working. If not, check wiring and driver. siemens s7 200 smart password unlock
If the S7-200 SMART runs firmware V02.05 or higher, software password cracking may fail due to improved encryption (AES-128). In this scenario, the only remaining method is . In the dialog box, select (this includes the
The S7-200 SMART system utilizes up to four levels of password protection, configured via the System Block > Security tab in STEP 7-Micro/WIN SMART. Level 1 (Full Access): In the dialog box