If you do not have the original password and need to use the PLC for a new project, you can clear the hardware.
This method will delete the current program running on the PLC. Ensure you have a backup of the project file before doing this. If you cannot upload the current program due to the password, you will be left with a blank PLC. Method 2: Contact the Original Equipment Manufacturer (OEM)
The S7-200 SMART supports various protection levels through the STEP 7-Micro/WIN SMART software. These levels dictate what a user can do with the PLC: Full read/write access. siemens s7 200 smart password unlock fixed
Copy the S7_JOB.S7S file to the root directory of a blank Micro SD card. The card must be empty for the procedure to work reliably.
Once you have successfully unlocked your S7-200 SMART, you need a permanent fix to avoid repeating this nightmare. If you do not have the original password
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Fully restricts unauthorized uploads, downloads, and monitoring. How the Password Unlock Issue is Fixed If you cannot upload the current program due
Inside the file, type the following text on the first line: RESET_TO_FACTORY