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F
Fieldbus
™
OUNDATION
December 2022
Table 8-3: Transducer Block Parameter Descriptions
Parameter mnemonic
COMB_DELTA_RESISTANCE
COMB_FAILED_CONSTANT
COMB_FAILED_SLOPE
COMB_HTR_DUTYCYCLE
COMB_PERCENT_OF_RANGE N/A
COMB_PREVIOUS_CONSTAN
T
COMB_PREVIOUS_SLOPE
COMB_PRIMARY_VALUE
COMB_PRIMARY_VALUE_
RANGE
COMB_PRIMARY_VALUE_TY
PE
COMB_REFERENCE_OHMS
132
Valid range
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
(continued)
Units
Ohms
ppm
ppm/Ohms
N/A
%
ppm
ppm/Ohms
N/A
N/A
N/A
Ohms
Manual
00809-0500-4880
Description
The raw value of the
combustibles level input.
This is the difference
between the active and
reference RTDs.
This is the constant value
calculated from the last
failed combustibles
calculation.
This is the slope value
calculated from the last
failed combustibles
calibration.
Combustibles heater
duty cycle.
The percent of range of
the current combustibles
reading.
The combustibles
calibration constant from
the previous good
calibration.
The combustibles
calibration slope from
the previous good
calibration.
The value and status of
the combustibles
concentration reading.
The high and low range
limit values, the
engineering units code,
and the number of digits
to the right of the
decimal point for the
combustibles reading.
See FF-903, Section 3.3
The raw value of the
combustibles reference
input.
Emerson.com/Rosemount
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