Serial Port Communications
401-92-4 A .ver 97020-00094
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• S Factor Offset – offset adjustment enabling the analyzer to be
tuned to match a specific calibration standard without affecting the
factory calibration.
• Pipeline Pressure – sets the pressure used in calculating dew point.
The pressure unit is mb when setting this parameter via Modbus
communications and as set by the Pressure Unit parameter when
setting via the front panel.
• Zero Offset – factory set offset applied to the concentration
calculation before compensation coefficients. A negative value adds
and a positive value subtra
cts.
• PA1, PA2, PA3, PA4 – factory set coefficients in the pressure
compensation equation. Should not be changed in field.
• C0, C1, C2, C3 – factory set non-linearity coefficients for extended
range equipment. Should not be changed in field.
• PkDf – midpoint current (mA) of laser scan.
• Rcalb – factory set gain adjustment for the concentration reading.
• Alarm Flags – long integer register identifying the status of each
individual alarm in the analyzer as follows:
Bit 0 = 1, general fault condition exists
Bi
t 1 = 1, Null Fail alarm cond
ition exists
Bit 2 = 1, Spectrum Fail condition exists
Bit 3 = 1, P/T Fail condition exists
Bit 4 = 1, Power Fail condition exists
Bit 5 = 1, Track Fail condition exists
• User Analyzer ID – user defined numeric analyzer ID.
• User Sample ID – user defined numeric sample ID.
• User Component ID – user defined numeric component ID.
• Serial Number – factory assigned hardware serial number for the
analyzer.
• PP2F – (counts) concentration signal.
• Powr – (counts) laser power detected at the absorption peak.
• Indx – position of the absorption peak along scan.
• Zero – (counts) detected signal level with laser off.
• # Spectrum Average – number of scans averaged for each
measurement.
• Logger Rate – running average of the concentration reading.
• Peak Tracking – turns peak tracking on and off.
• Temperature Unit – sets the temperature units.
• Pressure Unit – sets the pressure units.
UK Distibution by IMA Ltd Tel: +44 (0)1943 878877 Email: info@ima.co.uk Web: www.ima.co.uk
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