Once you have completed a drawing, or at least enough of a drawing to want to test something, you begin the process of turning the drawing into executable code. Begin by selecting "Check Data Connections" from the Special menu.
The message you hope to see is "No errors...".
The message you will see if a problem is found will look like the screen shot below. In this case, part of a wire is missing, leaving no connection between the points highlighted. Not connected is one of several possible errors. Multiple outputs tied together will also generate an error. Duplicate function block numbers will generate an error.
It is important to note that this level of error checking is not all inclusive. This only catches the obvious errors. Some errors are evasive. As far as the drawing program is concerned, "FB?" is a valid text string, and therefore a valid reference designator, but the compiler will not accept this. The code generator will automatically convert FB? to just FB and continue on, provided there is only one such instance. This level of error checking is only checking your drawing. It is not checking code because generating code is the next step yet to be completed. Next-> |
