Ok, the problem is that the trend/trace system can't read function block instance data. The variables has to be stored directly under the program calling the FBs. Thus, FB variables to be trended/traced must be connected to variables declared in the program. Seems like a bug to me!
Anyone have problems with trend in lastest release - SP21 Patch5? Does not record data, stores only zeros to the sqlite database and flatliners at zero in trend/trace views. Worked in P4.
Problem with Visualization Manager and archiving. Project without VM has no problem. With VM in the project there is an error message and no archive has been created