Instrument Control (GPIB, Serial, VISA, IVI)

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Error-code (1073807346) in program for serial communication with Votsch oven.

Hi,

 

I am making a program to communicate via RS232 with an Industrial oven of Votsch (VT7034). On the picture Main_program you see how my program is build. I use a Flat sequence structure to run the program step by step. First i do all the settings like baudrate en bus-adress. Then I use a subVI to set the temperature for the oven and this works. In the next part of the sequence i want to read the temperature of the oven and here I get an error code in the subVI Votsch temp read. In the picture error_code you see that i get an error code and it makes that i get a true out of the VISA write VI. This makes that the progam dont run the case structure because i need a false. In the picture you see where i get the error_code.

I followed the instructions on this link: http://digital.ni.com/public.nsf/allkb/A2561CDE98B66DD4862566510078264F

Does anyone know why i get this message?

 

Greetz..

 

 

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Message 1 of 2
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It's pretty clear that you don't have a VISA reference wired into the read subVI and that pretty much matches that error.

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Message 2 of 2
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