repetitive subVIs calendar

Hello

I would like to make a single pulse program that sends commands different sets at different times during the duration of the parent VI. Orders must be sent only once at the beginning of the precise time (see attachment) and not constantly all the time duration is reached. I tried various methods (counting time and the use of the different Boolean operators, the elapsed time express vi, pulse generators, etc.), but still I can't find a perfect structure for my needs. In addition to sending the commands I want to follow other ports series continuously for the measurement of the data during execution, so waiting simple functions do not work. I want to send the command sequence must be repeated several times (variable) which translates an interpretant pulse program. But it seemed to me a simple task at the beginning that I am lost right now, because different approaches work in part, but neither gives a satisfactory result so far.

I'm pretty new to LabView and I'd appreciate any ideas how to implement these functions in a safe and clean way (scalability, etc.). This program will serve to the configuration of the mass flow controllers (MFC), whose dose of different gases at different concentrations. I would use avoiding the necessary time for dosage are minutes and hours, so no trigger of millisecond is needed.

Thanks a lot for your help and your advice.

Thomas

Even if you use the same serial port, you can always set up a loop that makes communications and use issues or events send orders when the other loop has expired for this event. It shouldn't be so hard to get this to work.

Tags: NI Software

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