Visa Error -1073802339

[mydog]

I am getting an unknown VISA read error -1073802339. Any ideas? Thanks, Doug

[Mustanghipo65]

Do you get this when communicating to the instrument in MAX?

[smercurio_fc]

Please explain what you were doing when you got your error. Please provide details as to your code. Please provide screenshots (NO BITMAPS) of your code, or post your VI.

We are not mind readers.

[mydog]

I received this back from the LabVIEW Read Visa vi (version 8.6) when trying to read from a USB device. I suspect it might be a timeout error: −1073807339 Timeout expired before operation completed. Thanks, Doug

[Mustanghipo65]

Very well could be a timeout error, especially if your instrument doesn't send termination character, or the instrument wasn't sent a command that requires a read. Are you getting anything out of the read?

[mydog]

Attached is the block diagram. I am not receiving anything back (return count = 0). Thanks, Doug

[smercurio_fc]

No code...

Please indicate what instrument/device you are communicating with. (Again, we are not mind readers.)

[mydog]

Sorry about the code attachment failure.  I am trying again to attach the diagram.

I am communicating with a PSoC board via USB 2.0.   MAX recognizes the board with the correct settings (BAUD rate, etc)

[smercurio_fc]

You have no delay between the write and the read. Have you tried adding one? Have you verified that termination character enable is set to false?

You mentioned that you had a USB device, but your last message mentioned baud rate. This implies a serial connection. Are you dealing with a virtual COM port?