Step 7 S7 300 Password

[mickuk]

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Hi, I have a problem!
I recommissioned a large Ultra sonic cleaning maschine last week. It hat not been used for over 15 Years. All was well until I got fed up of entering the password on the very small HDI panel. The password was 1234 for all levels.
I decided to change the password to ( )
Empty, nothing.
I deleted the **** and pressed ok
Now I can't get into any level at all.
Whatever I input as password it's wrong.
Any ideas please and thanks

 

[PN/DP]

Which password did you change, and where?
• From the S7-300 CPU? Set a new password in the hardware configuration and transfer it to the CPU.
• From an HMI operator panel? What type is it? What software is it being configured with? It might also help to transfer the project or just the user list to the panel again.

What do you mean by "very small HDI panel"?

If you have more questions, please tell us exactly which devices you are working with.