R1020

Summary

Flows cannot directly cross the boundaries of a Structured Activity Node.

Details

Structured Activity Nodes are:

A Flow cannot enter a Structured Node from outside, other than via an Input Pin. Similarly, a Flow cannot exit a Structured Node, other than via an Output Pin.

The following figure illustrates the different authorized and forbidden cases.

green = correct flows via pins, red = incorrect flow crossing structured node boundaries

Tips

Possible solutions to this problem are as follows:

Remember that you cannot link two pins by a Control Flow.