Table 8-3: Transducer Block Parameter Descriptions
(continued)
Parameter mnemonic Valid range Units Description
BLOWBACK_PURGE_TIME 0-500 Seconds The amount of time
before returning the
output to process after
performing a blowback.
BLOWBACK_STATE 0, 1, 2 Enumerated The current state of the
blowback cycle. (0 = Idle,
1 = Blow, 2 = Purge)
CAL_GAS_TIME 60 - 1200 Seconds The amount of time
calibration gas should
flow before a reading is
taken.
CAL_PURGE_TIME 60 - 1200 Seconds The amount of time
before returning the
output to process after
calibrating.
CAL_REC_ENABLE 0: No
1: Yes
Enable/disable
calibration
recommended alarm.
CAL_RESULTS See Table 8-10. Bit Enum Calibration result.
CAL_STATE See Table 8-4. Enumerated The current state of the
calibration cycle.
CAL_STATE_STEP N/A N/A Initiates a calibration or
goes to the next
calibration step.
CAL_STATE_TIME N/A Seconds The time left in the
current calibration step.
COLLECTION_DIRECTORY N/A N/A See Transducer Block
Specification, Part 1.
FF-902, page 11.
COMB_SENSOR_CAL_LOC N/A N/A See FF-903, Section 3.3.
COMB_SENSOR_CAL_METH
OD
N/A N/A See FF-903, Sections 3.3
and 4.5.
COMB_SENSOR_CAL_WHO See FF-903, Section 3.3.
COMB_AUTOCAL_INTERVAL 0-9999 Hours The time between
automatic calibrations of
the combustibles sensor.
COMB_CAL_POINT 0-55000 ppm The value of the
combustibles test gas.
COMB_CONSTANT -99.0 to 99.0 ppm The combustibles
calibration constant.
Manual FOUNDATION
™
Fieldbus
00809-0500-4880 December 2022
Rosemount OCX8800A 131
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