Dear Experts,

I have an old siemens PLC S7 314 6ES7 314-1AE02-0AB0, I could not find protection tab on this

I need to put an authentication for upload and down load of the program. how can I do it?? Please help it is very necessary

Software: Step7 v5.5 SP1

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Split from Cpu 314 not exist in the hardware catalog.

Hello,

no way do to dat!

Protection first available with 6es7314-1AE03-0AB0.

You PLC is to old to be protected.

Regards

Christoph

any other alternative  solution with other soft wares can i lock at-least fb,db,fc 

please suggest