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Reading Large data from serial port

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Hello,

 

I'm trying to read data from an instrument using serial port.  for my test file I'm using labview example, I attached its block diagram, the file name is "Basic Serial Write and Read_1 bit.vi".

 

as I said this is built it Labview example.

 

when reading small data such as temperature it works great.

when reading large data such as log set - not so great.

 

the default delay time between write and read is 500. If I reduce it I read less data then available. if I Increase it - I'm able to do this up to 580 - when I go to 600  I get an error:

 

"VISA:  (Hex 0xBFFF006C) An overrun error occurred during transfer. A character was not read from the hardware before the next character arrived."

 

what is the problem and how to solve it? this is happens at LabView Example file...

 

 


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