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RS 232 Communication Initialization

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Hello everyone, 

 

my name is Carl and I have a problem communicating with a Mass Flow Controller. Before developing a more advanced program I wanted to check the communication and how this works ( I'm new to LabView, only had Matlab and Scala so far ).

As my simple VI is not working I checked if a very simple RS232 communication tool would work (Termite 3.2). It does with the following settings: (IMG_1868)

 

Very important was the Append CR setting. Then I tried to adapt the settings to my VI. But somehow I think I got the Append CR setting wrong. It is a termination char setting and 13 is the decimal corresponding to carriage return according to different tables I've found in the internet. 

 

My VI is sending a text command and reading the answer every second. The LED shows if there is something read. 

 

As the communication is working with the termite tool it has to be a problem with my VI and the VISA settings. 

 

Thank you very much for you help!

 

Carl


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