Hi, I am working with a device connected by a COM port and I'm interested in seeing the port data. My intention is that when I send a command to the device I can see the answer. I only want to see the command's momentary response, not all the port data. Thank you for helping, Mikel

Mikel, it's easy if you think of it! Someting along these lines... 1. Open the port and set an appropriate timeout OpenComConfig (comPort...); SetComTime (comPort, 0.5); // Timeout depends on your hardware 2. Poll the device ComWrt (comPort, ....); ComRd (comPort, buffer, expectedLenght); strcat (buffer, "\n"); // Add each response in a new line SetCtrlVal (panelHandle, PANEL_TEXTBOX, buffer); That's all! It's up to you to complete or accomodate the code according to your setup (e.g. using ComRdTerm if the device sends messages with specific termination). And be sure to add a robust error checking in order to be warned in case of errors.

LabWindows/CVI

Visualize COM Port data

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Thanks, I didn't know about that SetComTime.

Thank you,

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LabWindows/CVI

Visualize COM Port data

Rif.: Visualize COM Port data