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Title: Splitting data packets with the parser module Post by: Spomaha on August 09, 2012, 09:28:27 AM My query contents 3 parts. Each part demands a certain information:
<STX>#81#D4#D5<ETX><STX>#81#C1#B0#F0<ETX><STX>#81#C1#B1#F1<ETX> Answers look like this (1 data packet): <STX>#81#D4#B0#B9#B0#B8#B1#B2#B0#B7#B4#B7#B5#B9#DF<ETX><STX>#81#C1#B0#A0#B0#B7#B0#AE#B0#A0#B0#B7#B0#AE#B0#F0<ETX><STX>#81#C1#B1#A0#B0#B8#B5#AE#B0#A0#B0#B8#B5#AE#B0#F1<ETX> I have a problem with parsing the data packets. Sometimes the parser module doesn't figure out where the correct beginning/ending of the data packet is. The result is a "slipping" of the parsed data. There is a checksum in front of every <ETX>. I tried to split the packets by sign characters, but concerning the checksum the second and the third part of the packet have the same ending. Beginning: #02#81#D4 Ending: ?! Now I split them by a timeout of 10 ms. It also doesn't work. Is there also a solution for three queries? I need to extract/export 2 variables of each part. Title: Re: Splitting data packets with the parser module Post by: Arthur Grasin on August 08, 2020, 02:00:00 PM You may use #02 and #03 as begin and end signatures.
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