Serial Communication in NI Max but not LabVIEW VI

[sabolton]

I am able to communicate to a device in NI Max very easily. I set the baud rate and I remove all uses of the terminal character, then I can easily write to the device using the command "current=200\r". I tried to do this using VISA Configure Serial Port with the terminal character disabled. I use the same command and it doesn't work. I also tried enabling the termination character and changing it to 13 (to represent \r) and using the command "current=200" and that hasn't worked either. 

[crossrulz]

You have to give the port time to send the data.  You are currently passing the command to the port's buffer and then immediately closing it.

[sabolton]

Thank you for the suggestion, unfortunately that didn't work. I added a time delay of 3 seconds and I tried removing VISA Close completely. 

[brnbs]

If you put the 3 second wait in the simple VI, it won't necessarily wait when you need it.  Try putting the steps in a flat sequence structure, with the VISA initialization in one frame, the send in the second frame, the wait in the 3rd frame and the VISA close in the last frame.  3 seconds is too long.  500 ms is suitable.  Also, why are you not using the default termination character?

[JB]

You could start with this example from NI :