Labview8.2 programming

[Fayasoft]

If anyone can help me and figure out why everytime both fans turn ON  even the setpoint is not reaching the process value (auto option), attached is the section of Program , please open block diagram and see case"2" of big case structure. I am a new developer and any help in this regard will be highly appreciated. Thanks

Faiyaz Syed

[Wayne.C]

I'm not exactly sure why your vi does not run correctly.  You are using multiple front panel controls that all point to the same cFP I/O.  That might be part of the problem.  I also noticed that you are not using the error cluster.  This could mask an issue with your I/O.  I simplified your code and added the error cluster. 

Hopefully the combination of the Error Cluster and Highlight Excution will help you resolve any remaining problems.

Make sure that the correct I/O are selected in the front panel controls.

Make sure that you are getting the correct temp reading.

Use the "Highlight Execution Mode" to observe how the code is actually executing.

[Fayasoft]

hi centrebolt,

Thanks , i tried yr code in highlted mode , looks like it is going to work , and also thanks to correct  loop by using error cluster , yes i did not use it but i am going to use it now , other thing is  i will add with this loop , which is use of shared-variable because i want to change set point of fans from other VI running from host computer , do you think its a good idea to use shared variable in that case? i am comfortable using global and local variable but not with shared that's why I am hasitating. any recommendations to change fans' set point using what kind of variable ?

Thanks

Fayasoft

[Wayne.C]

I'm glad that worked out.

The shared network variable should work just fine for setpoints.