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Temperature PID in Labview using a labjack

Hello! I am trying to make a temperature PID controller and am having trouble getting my cartridge heater to respond. I am using the example provided by NI but have put in the components I am trying to control. I have a thermocouple indicating the temperature (wired to process variable temp) and a cartridge heater as my process variable. I have the cartridge heater wired to the output but cannot get the temperature to change. Can someone tell me if I have my VI wired correctly? Also, I need the state to be determined by the PID but am not sure how to set up my VI in this manner. I have included my VI. Any assistance would be appreciated. Thank you!

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We can at least help in terms of the hardware.  What type of signal does your cartridge heater expect?  Which LabJack are you using and which output on that LabJack?

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