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Problems to implement a solar regulator in a Producer-Consumer-Loop / flags

Hello everyone!

I hope to get some help to implement my solar regulator in a producer consumer loop.

In dependence of different temperature levels, a solar pump should be switch on or of. In addition I implemented a over temperatur protection. If the over temperatur level exceeds, the pumpe should switch on again at a temperatur, wich is about 10 degrees below the over temerature.

To implement every situation, I used a state maschine which is running in a loop. In addition I used a shift register as a flag for the following:

  • pump is switched on or off
  • overstep of the temperatur
  • stop buttonpressd

I need these values in the next case to choose the right Case.

The regulator itselve is working fine.

 

But if I like to use it in my producer consumer loop I got trouble.

I know, the loop of the regulator need to stop by itselve, so that the Producer loop can continiue. But if I stop and start the regulator VI again, I lose all the set flags/ values in my shift register.

 

I thought about to use a global variable for storing the values of the pump, the stop button an the over temperatur. But would this not be a kind of dirty solution? Any better ideas?

 

Atteched:

Regulator "Regler Zustandsautomat"

Producer Consumer loop with regulator "Producer Consumer Loop"

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Hi Laudst,

 

several options:

- use an uninitialized shift register in your regulator subVI to store internal settings

- use a shift register in the consumer loop to store the regulator settings

 

Best regards,
GerdW


using LV2016/2019/2021 on Win10/11+cRIO, TestStand2016/2019
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