CFC execution order 0

An element in a CFC network has the execution order 0. The IDE numbers the execution orders of a network from 1, so it never exports an order of 0. An element with order 0 means the project file was changed outside of the IDE or is corrupted.

foo --> bar (0)    rejected
foo --> baz (1)

The debugger shows the elements of a diagram by their execution order: element 1 is line 1 of the diagram, element 2 is line 2. Line 0 means “no source line”, so a debugger could never stop on an element with order 0. Open the network in the IDE and save it again, so that every element gets a valid order.

Technical details

In the exported CFC file, the execution order is the priorityInNetwork attribute of the element’s EvaluationPriority. The element is rejected when the attribute is 0:

<EvaluationPriority priorityInNetwork="0"/>    <!-- rejected -->
<EvaluationPriority priorityInNetwork="1"/>    <!-- the first valid order -->