Hi my friends:

I am trying to Upload a safety program as a backup, however when I upload the whole Station, I found the signature will be different even I did nothing to it, and further this backup program  cannot perform correctly, I prepare an empty MMC Card and the same CPU. The CPU keep in STOP mode, after I download HW Config and Software with safety program editor(both upload and download performed in STOP mode). 

I know the previous procedure works fine within standard software environment, but in safety environment it doesn't, did I miss any step?

I just wanna make a usable safety program backup. Thanks for all the help.

Hi Lee,

Did you find a solution for this topic?

I've got the same issue, and i'm still searching for the answer.

Hi,

maybe this link is helpful in this regards.

SIMATIC Industrial Software S7 Distributed Safety - configuring and programming

-> up from part "Downloading the Safety Program to a Programming Device or PC"

The safety program you downloaded to the F-CPU again can only be executed if:

• The F-CPU did not execute the safety program prior to uploading it to the programming device or PC.
• The hardware configuration of the safety-related communication (see Chapter "Configuring and Programming Communication") has not been changed.

-> most likely, the software was executed... -> Note

regards

sancruz