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Comport problems

Hi

 

I have been using RS232 to communicate with a board using a terminal program and comms are okay sends/receives information.

 

I have been trying to use CVI and the serial.c example that is provided by NI.  When I use the receive button, the sent command and the board output are shown in the textbox.

 

The sent command is being echoed back somehow.

How can I stop this?

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