Jai JSK Posted January 11, 2017 Report Share Posted January 11, 2017 (edited) When Data is written to a COM port, why Same data is received back from the COM port? Edited January 11, 2017 by Jai JSK Quote Link to comment
EricLarsen Posted January 11, 2017 Report Share Posted January 11, 2017 Could your instrument be echoing back the string? This is a common way for instruments to acknowledge receipt of the communication. Another possibility is you've got your TX and RX wired for loopback and you're reading back your own string. Quote Link to comment
ShaunR Posted January 11, 2017 Report Share Posted January 11, 2017 1 hour ago, EricLarsen said: Could your instrument be echoing back the string? This is a common way for instruments to acknowledge receipt of the communication. Another possibility is you've got your TX and RX wired for loopback and you're reading back your own string. Indeed. Also. That warning means Quote Warning 1073676294 occurred at an unidentified location Possible reason(s): VISA: (Hex 0x3FFF0006) The number of bytes transferred is equal to the requested input count. More data might be available. So here maybe more characters. Quote Link to comment
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