Hi there,

We have a machine using S7 300 PLC.

Out of no where system stopped working and all parameters on touch screen became ZERO.

Now when we try to change parameters on manual settings it asks for password and even putting correct password it does not do anything and keep asking for password.

Any advice would be apricated.

q-miller

Closed cause question posted twice.

The second thread with the subject S7 300 HMI password issue is published within the conference SIMATIC S7-300 / S7-300F.