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Serial Communications Intermittent Issue

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Hi, I'm having a strange issue while serially communicating with a device. 

 

I'm using the enlosed VI and trying to simply get the command prompt read from the device with a carriage return.

 

This works intermittently, at times it returns the prompt.  Other times it outputs an error that I can replicate using Tera-Term my sending a break command.

 

Any idea of how I can fix my vi to make it more stable and avoid the error?  Thanks!


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