Midas
®
Gas Detector
A-4
Ref. Addr.
Reg. Name
Bits Function Value Enumeration
40004 FCN2 Gas Concentration in floating point format word 2 of 2
40005 CONC Gas Concentration in Integer Format
Conversion equation: ppm value = Registry Value * 1/10 DECP
40006 NOFT Number of most important active fault
40007 DPUN Decimal point and units
0-2 Decimal point indicator (0-3)
3-7 for future expansion
8-15 Concentration units
1: ppm
2: ppb
4: % volume
8: %LEL
16: mA
0, 3, 5, 6, 7, 9-15, 17-255: for future expansion
40008 TEMP Temperature in Celsius
Signed 16-bit integer
40009 CLRH Cell life remaining in hours
40010 HRTB Heartbeat Counter, 16 LSB of time in seconds
40011 FLOW Sample flowrate in cc/minute
40012 Reserved for future expansion, currently zero
40013 A1T1
Alarm 1 threshold in floating point format,
Scaling same as FCN1 and FCN2
40014 A1T2
40015 A2T1
Alarm 2 threshold in floating point format,
Scaling same as FCN1 and FCN2
40016 A2T2
40017 ASI
Bits 0 – 1 Alarm status, equivalent to STTS bits 6-7
Bits 2-15 Zero
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