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Cyclic Valves and Continuous Pressure Reading

Hello All,

 

I have 5 pressurized lines, each line has 2 solenoid valves. So I have ten valves and I want to control them cyclically in a way that when one valve on a line is open the other one is close (e.g. when 1-A is open, 1-B is closed). I will be reading the pressure on each line continously. I have prepared the following VI. While not an efficient program, it is doing the job. The problem is that now I want to close both valves on a line once the pressure in that line drops for more than a certain time. For some reason, the program works for Line one only (the other case structures do not seem to be working). I would really appreciate it if someone can look at my VI and help me with this.

 

Thanks,

Sia

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