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Rosemount Model 8800C Vortex Flowmeter with FOUNDATION
TM
Fieldbus
B-4
Figure B-1. Analog Input
Function Block Schematic.
Figure B-2. Analog Input Function
Block Timing Diagram.
Filtering The filtering feature changes the response time of the device to smooth
variations in output readings caused by rapid changes in input. You can
adjust the filter time constant (in seconds) using the PV_FTIME
parameter. Set the filter time constant to zero to disable the
filter feature.
Analog
Measurement
Access
Analog
Meas.
CHANNEL
SIMULATE
OUT_SCALE
XD_SCALE
FIELD_VAL
L_TYPE
IO_OPTS
PV_FTIME
MODE
STATUS_OPTS
HI_HI_LIM
HI_LIM
LO_LO_LIM
LO_LIM
ALARM_HYS
ALARM_TYPE
OUT_D
OUT
PV
Convert
Cutoff Filter
Status
Calc.
Alarm
Detection
NOTES:
OUT = block output value and status.
OUT_D = discrete output that signals a selected alarm condition.
LOW_CUT
FIELDBUS-FBUS_02A
PV_FTIME
63% of Change
OUT (mode in man)
OUT (mode in auto)
PV
Time (seconds)
FIELD_VAL
FIELDBUS-FBUS_03A