INFICON Composer Elite Gas Concentration Monitor - Manual (Page 103)

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Composer Elite Operating Manual
5.7 Composer Elite Communications Examples
Commands and responses are all done using hexadecimal representation.
5.7.1 Hello Command, ASCII Name and Version
Command Format: H
Command (H 0 0 0): 04,00,48,00,00,00,48
04,00 = Length
48,00,00,00 = Command
48 = Checksum
Response: 22,00,48,00,00,00,C1,80,43,6F,6D,70,6F,73,65,72,20,45,6C,69,74,
65,20,76,65,72,20,30,31,2E,30,30,2E,36,33,00,F7
22,00 = Length
48,00,00,00 = Command
C1,80 = Status bytes
43,6F,6D,70,6F,73,65,72,20,45,6C,69,74,65,20,76,65,72,20,30,31,2E,30,30,2E,3
6,33,00 = response in hex = Composer Elite ver 01.00.63 (null terminated string)
F7 = Checksum
5.7.2 Query Command, Carrier Molecular Weight
Command Format: Q
Command (Q 2 1 1): 04,00,51,02,01,01,55
04,00 = Length
41,02,01,01 = Command sent
55 = Checksum
Response: 0A,00,51,02,01,01,C1,00,7B,14,E0,41,C6
0A,00 = Length
51,02,01,01 = Command
C1,00 = Status bytes
7B,14,E0,41 = Float value (low/high) = 28.010
C6 = Checksum