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Sending ASCII In HEX RS-485 Commands


I need to send commands from Host to Instrumnets and back
ASCII in HEX format (RS-485).
I know what the commands are but I don't know how to write it in the
VB code.

Commands exapmles:

Typical WRITE command (Host write to Instrument):

<stx> L <addr> <----------Data--------------> <cksm> <etx>
02 4C 33 32 30 32 30 30 30 30 31 35 46 46 37 39 03

Insrument reply:

<stx> L <addr> <-Data-> <cksm> <ack>
02 4C 33 32 30 30 31 31 06

**If someone can show me how to implement this protocol in VB code
I'll be more then glad.

Thanks, Tzachi

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