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F
Fieldbus
™
OUNDATION
April 2023
Table 8-3: Transducer Block Parameter Descriptions
Parameter mnemonic
COMB_SLOPE
COMB_SLOPE_WARNING
COMB_T90
COMB_TEMP_MAX
COMB_THERMOCOUPLE_
INPUT
COMB_TIME_TO_NEXT
COMB_TOL_CHECK
COZERO_DURATION
COZERO_ENABLED
COZERO_INTERVAL
COZERO_OUTTRAK
COZERO_PURGE_TIME
COZERO_STATE
COZERO_UPDATE
112
Valid range
200-450
25.0 - 99.0
0 - 300
N/A
N/A
0 - 9999
0: No
1: Yes
120 - 600
0: Off
1: On
60 - 480
0, 1, 2, 3
60 - 180
0, 1, 2
0: No
1: Yes
(continued)
Units
ppm/Ohms
% of FS
Seconds
° C
mV
Hours
N/A
Seconds
Enumerated
Minutes
Enumerated
Seconds
N/A
Enumerated
Manual
00809-0500-4881
Description
The combustibles
calibration slope.
The combustibles slope
warning threshold.
The amount of time that
the combustibles process
variable will take to reach
90% of the actual process
variable.
The highest combustibles
temperature since power
on.
Combustible block
thermocouple (T/C) voltage
(valid only with Type 3
sensor).
The time until the next
automatic calibration of the
combustibles sensor.
Combustible calibration gas
tolerance check.
The duration of the
combustibles sensor zero
cycle.
Indicates whether
combustibles sensor zero is
enabled.
The time between
combustibles sensor zero
cycles.
Indicates whether the
combustibles analog output
should track the input
during combustibles sensor
zero or lock at the last
process reading. (0 = None,
1 = O
, 2 = CO
, 3 = Both)
2
2
The duration of the
combustibles sensor zero
purge.
The current step of the
combustibles sensor zero
cycle (0 = Idle, 1 = Flowing,
2 = Purging)
Indicates whether the
combustibles calibration
constants should be
updated after combustibles
sensor zero.
Emerson.com/Rosemount
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