S7-300 safety program download issue

Dear User,

Do you use distributed safety package for S7-300F?In that case you have 2 options to try:

1. Compare your offline and online projects and find the differences.Undo the changes in your offline project (f it is only logic) and compile the safety program again and check it you get the same signature as the original project.
   
   
   
2. You can upload , add comments and symbols, check for consistency and compile safety program and check if signature is still the same(page 277 HERE ).

Note:While working on such projects, make an archive of all steps of your work and keep them in a safe path because it can not be easily back to normal.

I hope it helps,

hdhosseini