Emerson Rosemount OCX 8800 Reference Manual page 144

Foundation Fieldbus
Table 7-20: Definitions of analog input function block system parameters
Parameter
LO_LO_LIM
LO_LO_PRI
LO_PRI
LOW_CUT
MODE_BLK
OUT
OUT_D
OUT_SCALE
PV
PV_FTIME
SIMULATE
134
Index number
32
31
29
17
05
08
37
11
07
18
09
(continued)
Units
EU of PV_SCALE
None
None
%
None
EU of OUT_SCALE
None
None
EU of XD_SCALe
Seconds
None
Description
The setting for the alarm
limit used to detect the LO
LO alarm condition.
The priority of the LO LO
alarm.
The priority of the LO alarm.
If percentage value of trans-
ducer input fails below this,
PV = 0.
The actual target, permit-
ted, and normal modes of
the block.
Target: The mode to go to.
Actual: The mode the block
is currently in.
Permitted: Allowed modes
that target may take on.
Normal: Most common
mode for target.
The block output value and
status.
Discrete output to indicate
a selected alarm condition.
The high and low scale val-
ues, engineering units code,
and a number of digits to
the right of the decimal
point associated with OUT.
The process variable used in
block execution.
The time constant of the
first-order PV filter. It is the
time required for a 63% val-
ue change in the IN value.
A group of data that con-
taines the current transduc-
er value and status, the si-
mulated transducer value
and status, and the enable/
disable bit.
OCX 8800