6. Function blocks6.3 UF - User function blockMarker contentsIf this option is enabled, the contents of the existing retentive market range will beretained when the project is transferred. In order for this to work, however, the markerrange defined as being retentive must remain unchanged .Function block contentsIf this option is enabled, the contents of the existing retentive operand range will beretained when the project is transferred. In order for this to work, however, the functionblock defined as being retentive must remain unchanged .The marker actual values are retained when you have selected the option Retain Mark-ers During Transfer.Comment sectionThis box can be used to enter an optional comment, e.g., in order to distinguish betweenvarious versions of a user function block.6.3.4 Programming a user function blockOnce you have created a user function block, the view will automatically switch to theProgramming view for the user function block. Moreover, a tab with the user functionblock's name and version will appear next to the Main program tab in the work pane.User function blocks are programmed exactly the same way as a main program. Theonly difference is that there are slightly fewer operands available (the list of availableoperands and function blocks will automatically change to reflect this).You should be in the Programming view for the user function block. Following is ascreenshot showing an example in which a timing relay is programmed with the flash-ing operating mode.easyE4 11/18 MN050009 EN www.eaton.com 439
