Hello,

I have Step 7 5.5 with CFC 7.1, and the project CFC is not compiled.

How can i check if there are somes differences between CFC charts and the project on line ?

One solution is possible for PCS 7,VXM (Version cross manager) is an additional package in PCS 7  DVD that requires license to perform CFC comparison.Read more in chapter 13 of :

SIMATIC PCS 7 Engineering System

But for STEP 7, You can compare blocks folders if Charts are compiled to see if any difference exists.

I hope it helps,

hdhosseini