S7 Project Comparisons

Hi All

I had a problem recently comparing blocks. I compared an S7 offline vs. online project using the Compare Blocks interface, and the blocks where all ok. When I open a certain block I can't go online because a DB (Not an Instance DB) is missing the tagname. I found and added in the name in the DB and the problem was solved easily enough.

I was wondering if anybody had some suggestions to pick up these differences without having to go online to each block.

if I correctly understood your question, the S7 gives you a warning which says "there are no parameter and local variable names available because there is a time stamp conflict (...)". It occurs when the offline and online copy of the datablock differs in size or variable type declaration. To solve the problem I developed an utility named S7 DB RAW DATA TRANSFER, available at www.runmode.com. The tools allows you to transfer the binary contents of DBs in raw mode, so that you can re-align the offline DB (the one with correct variables name and comments) with the actual contents of the online DB (the one with correct data values but messed up declarations). Quick link to the manual: http://www.runmode.com/s7dbrawdata_files/s7dbrawdata.pdf

Regards

Luca Gallina