force the flow of execution

I'm a newbie has arrived from VEE, so please be patient.

Vee, I always sequence input pins and output sequence on any bow that allow me to force the execution of a box.

In labview instead I'm not, so I guess that the execution order is always driven by data, correct them?

Now, I just created a few local variables where I want to store internal information, so I have the objects in the front panel, and the 'local' connect to them in the chart:

(as you can imagine, I'm changing a complex program, I didn't write it...)

Now, since these couples: 'Acq length', 'timeIntensity', 'Acq Start time', in whole isn't all input/output, I don't see how to impose their execution. In fact, they are never executed...

what I am doing wrong? Thank you for your help...

alzyx wrote:

> On the side right of the LabVIEW forum main page, there are links to tutorials.  Try them.

Thanks for the suggestion...

I am already tracking at least 3 manuals/tutorials in parallel,

but nowhere I found an answer to this question.

From what I've seen (Please correct if I am wrong), the execution goes according to:

(1) the data flow

(2) the error in / error on pins

... Since my case is not available, I'm really at a loss to know what to do.

P.S. just in case my using local variables deemed not necessary: I transfer data using son whenever that is possible, but in this case I use inhabitants because I set a few values within a species a case structure, and I do use them in another case.

If the transfer of data by wires between the cases is possible, I will be happy to hear!

Alessandro

You are on the right track, except that the error in and out is just another example of data flow.

LabVIEW data flow can be summarized in two sentences:

A node will not run as long as all entries are filled.

A node will not produce output until the node has executed completely.

When you boil everything down to basics, those are the only things that determine the flow of data.  If you take these two instructions literally, all cases where it seems that the execution order is ambiguous are really ambiguous - and you'd better fix it if a node is run before the other.

It's really a case of 'easier said than done. "

Tags: NI Software

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