Datalogger Qair Protocol - MAGEE Scientific AE33 User Manual

Aethalometer
Model AE33

5.6.8 Datalogger Qair protocol

The instrument supports data acquisition over protocol which complies with "Communication
protocol for digital links with air quality data acquisition stations ver. 3.1". It is a limited
version of the industrial JBUS communication protocol.
Standard command format: <slave number><function code><address><number of
words><CRC16>
<Slave number> - Instrument External ID, values from 1 – 255. (1 byte)
<Function code> - Supported function code is 3. (1 byte)
<address> - Supported address values are 0,10,20,30,34,37,179,187 (all decimal). (2 bytes).
<Number of words> - Number of words in the response message. (2 bytes)
<CRC 16> - checksum. (2 bytes).
Examples:
Manufacturer (address code 0)
o Command: [01] [03] [00] [00] [00] [0A] [C5] [CD]
o Response: [1] [3] [14] [4D] [61] [67] [65] [65] [20] [73] [63] [69] [65] [6E] [74] [69]
[66] [69] [63] [20] [20] [20] [20] [5C] [8E]
Serial number (address code 10)
o Command: [01] [03] [00] [0A] [00] [0A] [E5] [CF]
o Response: [1] [3] [14] [41] [45] [33] [33] [2D] [53] [30] [30] [2D] [30] [30] [30] [32]
[37] [20] [20] [20] [20] [20] [20] [62] [9E]
Software and firmware version (address code 20)
o Command: [01] [03] [00] [14] [00] [0A] [85] [C9]
o Response: [1] [3] [14] [31] [2E] [31] [2E] [37] [2E] [31] [20] [35] [31] [38] [20] [20]
[20] [20] [20] [20] [20] [20] [20] [F6] [E]
Date (address code 30)
o Command: [01] [03] [00] [1E] [00] [04] [24] [0F]
o Response: [1] [3] [8] [30] [32] [30] [37] [32] [30] [31] [35] [7D] [A3]
Time (address code 34)
o Command: [01] [03] [00] [22] [00] [03] [A5] [C1]
o Response: [1] [3] [6] [31] [30] [34] [38] [35] [30] [81] [1E]
Operating parameters (address code 37)
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User's manual – Ver. 1.53 July 2015 57/75