Projekteinstellungen - Check variable links
With this function all elements are linked to invalid variables. This can
occur, for example, when variables are linked to function blocks, but the
variables are subsequently deleted. Control elements or function blocks with
invalid links are output in the search field:
Click on the entry to jump to the module or control element.
Invalid addresses are normally simply ignored and do not affect the
functionality. This function should help to find possible errors.