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MQTT Enumerated Fields

Translator Status - Bit Mask
Value Description Notes
0x 0000 0001 EXO is unresponsive No transmissions received from the EXO in the last five seconds.
0x 0000 0002 Checksum error Latest transmission from the EXO had an invalid checksum.
0x 0000 0004 Parsing error Latest transmission from the EXO could not be parsed.
EXO Alarm Status - Bit Mask
Value Description Notes
0x 0000 0001 Emergency alert
0x 0000 0002 Pump low flow warning
0x 0000 0004 Cartridge error warning
0x 0000 0008 Cartridge not recognized
0x 0000 0010 Message warning
0x 0000 0020 Incoming call warning
0x 0000 0040 Comms lost warning
0x 0000 0080 Low battery warning
0x 0000 0100 Hardware test fail alarm
0x 0000 0200 Firmware not certified warning
0x 0000 0400 Pump failure alarm
0x 0000 0800 Tipped over warning
Sensor Status - Bit Mask
Value Description Notes
0x 0000 0001 Sensor under limit
0x 0000 0002 Low gas alarm
0x 0000 0004 Low gas alert
0x 0000 0008 Gas alarm
0x 0000 0010 Gas alert
0x 0000 0020 TWA alert
0x 0000 0040 STEL alert
0x 0000 0080 Sensor over limit
0x 0000 0400 Sensor calibration overdue
0x 0000 0800 Sensor is attached If this is not set, the sensor should be ignored.
0x 2000 0000 Sensor error
0x 4000 0000 Sensor is unresponsive
0x 8000 0000 Sensor is disabled
Measurement Units
Value Description Notes
0 PPM Parts per million
1 VOL Percentage by volume
2 LE Percentage of Lower Explosive Limit
3 MM3
Gas Types
Value Description Notes
0 FRESH_AIR Fresh air
1 H2S Hydrogen sulfide
2 CO Carbon monoxide
3 O2 Oxygen
4 CO2 Carbon dioxide
5 LEL Combustible gas
6 N2 Nitrogen
7 NH3 Ammonia
8 SO2 Sulfur dioxide
9 CL2 Chlorine
10 VOC_PPM Volatile organic compounds, parts per million
11 HCN Hydrogen cyanide
12 H2 Hydrogen
13 CLO2 Chlorine dioxide
14 O3 Oxone
15 For future use: VOC_PPB Volatile organic compounds, parts per billion
16 NO2 Nitrogen dioxide
17 NN_LEL Combustible gas, Nevada Nano MPS sensor
18 HF Hydrogen fluoride