Teledyne API T802 Paramagnetic O2 Analyzer Operation Manual

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6.5.2.8. SETTING HESSEN PROTOCOL STATUS FLAGS Teledyne API’s implementation of Hessen protocols includes a set of status bits that the instrument includes in responses to inform the host computer of its condition. Each bit can be assigned to one operational and warning message flag. The default settings for these bit/flags are:

Table 6-6: Default Hessen Status Flag Assignments

STATUS FLAG NAME DEFAULT BIT

ASSIGNMENT

WARNING FLAGS1

SAMPLE FLOW WARNING 0001
INVALID CONC
(The instrument’s front panel display will show the
concentration as “Warnings”)
0080

OPERATIONAL FLAGS1

In MANUAL Calibration Mode 0200
In O2 ZERO Calibration Mode3 0400
In CO2 ZERO Calibration Mode3 0400
In O2 SPAN Calibration Mode3 0800
In CO2 SPAN Calibration Mode3 0800
UNITS OF MEASURE FLAGS4
UGM 0000
MGM 2000
PPB 4000
PPM 6000
SPARE/UNUSED BITS 0001, 0002, 0004,
0008, 0010 0020, 0040,
0100, 1000, 8000

UNASSIGNED FLAGS (0000)

BOX TEMP WARNING O2 CONC ALARM 22
O2 CELL TEMP WARN ANALOG C AL WARNING
CO2 CELL TEMP WARN CAL MP O2
SAMPLE PRESS WARN CAL MP CO2
RELAY BOARD WARN REAR BOARD NOT DET
CANNOT DYN SPAN SYSTEM RESET
CANNOT DYN ZERO CO2 CONC ALARM 12

O2 CONC ALARM 12 CO2 CONC ALARM 22

1 These status flags are standard for all instruments and should probably not be
modified.
2 Only applicable if the analyzer is equipped with an alarm option.
3 It is possible to assign more than one flag to the same Hessen status bit. This
allows the grouping of similar flags, such as all temperature warnings, under the
same status bit. Be careful not to assign conflicting flags to the same bit as each
status bit will be triggered if any of the assigned flags is active.
4 While these units are assigned flags, they are not applicable in the T802 which
reports in % when measuring O2 and when reporting CO2.
07275B DCN6418