feedback node from case structure

[wb2nvy]

checkLED.vi is my first rev of this. Then I realized I can incorporate the 345/348 selection into the case structure, which resulted in checkLED2.vi. However as soon as I did this, the feedback loop inserted itself. I don't understand why this happened and what it means. The string coming from the case structure is an INPUT to the two 34970 vis. There is no feedback going on here. If Labview sees this as feedback, why didn't it insert the feedback node in checkLED.vi?

[Dennis_Knutson]

Look at the dataflow you have created by moving the strings into the case statement. The case statement requires data from the iteration terminal and from the VI in the sequence structure. The sequence structure requires data from the switch VI which in turn requires data from the case statement. This is a clear feedback situation that you did not have before.

[wb2nvy]

OK. I see that now Dennis. Duh. Thanks.