FieldServer FS-8700-101 - Manual (Page 17)

FS-8700-101_Setra Model 370 Digital Pressure Gage Manual Page 17 of 23
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Appendix A. Advanced Topics
Appendix A.1. How Data Gets Stored
Appendix A.1.1. Pressure Data
Offset (where x is the offset
specified in the MD)
Notes
X + 0 Gage Pressure. A signed real number.
X + 1
Gage Pressure Units. A whole number which is used
as a lookup into the table provide in section
“Appendix A.2 Gage Pressure Units”
X + 2
Gage Pressure Indicating Letter
‘A’ = 65
‘G’ = 71
‘T’ = 84
X + 3
Set to 1 If the pressure reading reports the status as
‘OK’
X + 4
Set to 1 If the pressure reading reports the pressure
as a ‘SEA LEVEL’ reading
Appendix A.1.2. Status Data
If any fields are absent in the response to a poll for status data then the values are set to
zero for that field.
Offset (where x is the offset
specified in the MD)
Notes
X + 0 ‘ELEV:’ measurement. A signed real number.
X + 1
‘ELEV:’ engineering units index. See table
“Appendix A.2 Gage Pressure Units”
X + 2 ‘MAX:’ measurement. A signed real number.
X + 3
‘MAX:’ engineering units index. See table “Appendix
A.2 Gage Pressure Units”
X + 4 ‘MIN:’ measurement. A signed real number.
X + 5
‘MIN:’ engineering units index. See table “Appendix
A.2 Gage Pressure Units”
X + 6 ‘HI ALARM:’ measurement. A signed real number.
X + 7
‘HI ALARM:’ engineering units index. See table
“Appendix A.2 Gage Pressure Units”
X + 8 ‘LO ALARM:’ measurement. A signed real number.
X + 9
‘LO ALARM:’ engineering units index. See table
“Appendix A.2 Gage Pressure Units”
X + 10 ‘ZERO:’ measurement. A signed real number.
X + 11
‘ZERO:’ engineering units index. See table
“Appendix A.2 Gage Pressure Units”
X + 12 ‘UNIT:’ measurement. A signed real number.
X + 13
‘UNIT:’ engineering units index. See table “Appendix
A.2 Gage Pressure Units”