Semaphor between VI and its clones

Hello fellow lovers of LV,.

I have a question about the possibility of something.
I made a program that records the data in an excel file. Works fine, no worries.
Now, I want to be able to clone the VI, so I can run to measure at the same time. The clone and the original will have to both record the same excel worksheet data.
I'll need a semaphor or something. So when one of the two processes of writing, the other VI must wait.

Is it possible to create a usable by the two screws semaphor?

Greetings and thanks for reading!

Here is a very basic screenshot of the general idea. This is not labour code, nor should it be used exactly as it is here. I leave pending references. Once again, warning, it is just to show a concept. Here, you have 3 loops, each of them put data in the logging queue. The loop of logging removes the data and writes to the log file. You may need to make your part of queue have an identifier so that you know where the data comes from (for example, using a cluster with a string or enum which defines the loop which transmitted the data, and data). This way you can write on the correct cell in your worksheet.

Tags: NI Software

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