Grad student in lab with a high temperature reaction vessel. I inherited a Labview code and cDAQ chassis with two modules from a previous student in my lab. I have a code which uses a NI 9219 to read a thermocouple, and then based upon that temperature, the code turns on heating tape through a 9481. There's an external thermocouple that makes sure the heating tape turns off once it gets too hot.
This has worked just fine for two years, but now the 9481 is not actually turning on my heating tape. The indicator light still turns on, but I've got no current going through. I've tested multiple heating tapes, so they're not the problem. I don't know if I have actually flipped a switch in the code or if the module is just physically broken.
I have a spare module of a 9485 that was purchased as a backup, but when I plug that in in place of the 9481, nothing happens. I don't know if that needs a different boolean switch to turn on. I don't have too much coding experience, so I hope this is a trivial problem. Any advice would be greatly appreciated!
