Sending data through the serial port and the mscomm control is not the same as the original data

Please find attached the mscomSerialWrite2.vi and the resulting image.

Try it and find that when data "FFAE" 4040 EA41 D8FF is sent,

the received data are "FFAE" 4040 EA41 3F

I tried other data, the result is as follows:

sending: 4164 8163 4341 03 receive: 41 64 81 63 43 41 03 leadK
sending: A143 B245 6AAA BBCC receive: AA BB 00 A1 B2 45 6a 43 result: NG
sending: AAAA AAAA AAAA AAAA AAAA AAAA receive: result AA AA AA AA AA AA AA AA AA AA AA AA K
sending: A1A1 A1A1 A1A1 A1A1 A1A1 receive: result A1 A1 A1 A1 A1 A1 A1 A1 A1 A1K
Send: FFAE 4040 EA41 D8FF receive: FF AE 40 40 41 EA 3F result: NG
Send: FFAE 4040 EA41 D8FF AA23 AB33 A233 AAAA A404 ABCD A2CD A22D B22C receive: FF AE 40 40 41 EA 3F 3F 3F 3F AA AA AB CD A2 CD result 3F 3F 3F: NG
Send: FFAE 40A 2 SDAC AETS receive: result FF AE 40 A2 CC DD EE 00: NG

Please help me solve the problem.

According to Microsoft, you want something with non-printable strings as an array of bytes, not a string.  I don't know that it will make a difference in this case, but may be worth a try.

Tags: NI Software

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