Controls for Single Acting Pump

[elambdin]

But which result do you get from your "From DDT" conversion? Do you get the first sample? Do you get the last sample? Do you get an AND of all samples or an OR operation? As all this is very ambiguous with DDT wires you really should avoid them!

 It would be the last sample because we want the pump to shut off when the desired load is achieved...meaning the last load into labview should be the desired load.

I will look further into using the DAQmx for the load cell and pressure transducer because your expertise is far greater than my basic knowledge.  I will post an updated VI in the next few days.  I'm sure I will have more questions from there.

[elambdin]

I am using the attached vi to learn case structure.  I plan to still convert the DAQAssistant items to DAQmx.  I have a case structure in this block diagram.  When the conditions outside the structure are true I want to automatically begin the task within the structure.  If the conditions are false I want to stop the entire program.  Is this done correctly?  If not where did I go wrong and how can I make it correct?  Also, I want to start the entire program with a single start button.  How would I do this?

[jordans]

Hi elambdin,

Starting the LabVIEW program from the run button will start the entire program. To stop the while loops you have several options. This document lays out your options for stopping multiple while loops.

Stopping Parallel While Loops in LabVIEW with One Stop Button 

Hope this helps!