When working with Smart Objects and zenon Logic code, it can occur that UDFBs are missing after updating and saving the smart objects in the zenon project. The compilation of the logic project does not work and shows errors. This issue might also occur in version 12 when variables are changed in Logic Studio via the the function "Edit variables as text".
The cause is an error in the "Synchronization/Saving" mechanism of Smart Objects.
This issue has been fixed. Effected UDFBs are handled correctly and zenon Logic projects in Smart Objects can be compiled again without errors.
To benefit from this fix: