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Configuration not entering While Loop

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Greetings,

 

I am having and issue with my VISA Serial port not passing its information to my transmit loop but it will pass it to my receieve loop.  I have written an VI that is suppose to communicate with 5 radios(4 serial and 1 TCP)  So when this program is running I will be communicating on 5 different channels.  I know that these transmit and receive loops work because I use the same ones to communicate with each individual radio.  The first thing that I want these modules to do is indicate if they have made connection with each radio.  When I run the VI in the highlight execution mode I can see that my VISA configuartion never propgrates inside my transmit while loop.  They do however transmit into my receive loop.  Does anyone know why I can't seem to initialize my send loop?  

 

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