Error-200684

[vitamina]

Hello!

I found this project but when i try to run it, there is an error (error-200684). Why?

I'm not able to use labview program but i need a similar project.

I enclose to you the project and the immage of the error

[crossrulz]

What is the voltage that you reading?  I'm guessing it is a negative number.  That would cause your error.

[vitamina]

In the immage attached the voltage is not negative, the voltage value is 2,46254 Volts.

[crossrulz]

Ok, just played with the VI for a little bit.

If the measured temperature is greater than the setpoint, then you will get a negative output from your PID.  You might need an offset in there or just limit the output to not go below 0.  I would just use the In Range And Coerce function to limit the range that your output could be.

[vitamina]

Can you tell me step by step how, please? 

I have never used labview.

Thank you.

[crossrulz]

Here's a snippet of the VI I made for troubleshooting purposes.  I added in the In Range And Coerce function to the output of the PID function.

Since you are brand new to LabVIEW, I highly recommend taking some of the free online tutorials that are out there.

3 Hour Introduction
6 Hour Introduction
LabVEW Basics
Self Paced training for students
Self Paced training beginner to advanced, SSP Required
LabVIEW Wiki on Training
Learning NI
Getting Started with NI Products

[vitamina]

I tried to modify the project on your advices. I compared your scheme with mine.
However the program don't run.

[crossrulz]

You still need your divide by 100 in there.

[vitamina]

where?

[Cla_Cup]

Hi Vitamina,

since you are new in LabVIEW programming, let's try to follow the instructions in this tutorial.

I think it will help you.

Kind regards.

Cla_CUP

NI ITALY