Hello, as far as I understand, It's not possible to edit application that is already in PLC, but maybe there is a way? Company I'm working for wants to fix some bugs in application that has been installed for some years in Vision 350, but the person who did first time setup and has all project files, unfourtanetly have passed away and there is no way to get project files now. PLC block is in active cogeneration station and controls three valves that has to be switched every 6 hours or things will get severly damaged. Time for fixing them is short and making it all from scratch is out of the question.
