Hach Ultra MET ONE 237AB, User Manual

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B.1.1.2 Data record format
Each counter can send a record of the data available. The data record is a string of ASCII
characters where the position in the string identifies the meaning of the character. The
length of the string changes with the amount of data points available from the counter.
Each data point is preceded by a 3-character tag that identifies the type of data that
follows in the next six data characters.
Figure 24 shows an example of the serial
communications format of a MET ONE 237B particle counter.
Figure 24 Serial communications format example
1 Status 9 Relative humidity
2 Date 10 Location
3 Time 11 Checksum
4 Period 12 End message
5 Channel 1 13 Size
6 Channel 2 14 Count
7 Channel 6 15 Tag
8 Temperature 16 Value