SFC program shows Questions marks (?) when the program is running
Dear experts, I take contact with you because I have an issue when we try to run a program on a CPU PM554-ETh. Originally the logic was programed in differents PDUs using FBs, but now we need to add two new PDUs, one programed in SFC (Called SELEC_BOMBAS_SFC) and the anotherone in FB (called TRANSICIONES). The problem come us when we try to simulate or run the new proyect. The new PDUs are shown in grey on the PDUs tree on the left. Also, the Global Variables appear as Questions marks (?). Please take a look on the attachments. Excuse me if this query result to much basic for you, but it is our first experience with ABB PLCs. Thank you very much in advance.
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