5/12/2017
TECH-538/D.W.O. 23160
Page 161 of 189
Index
Parameter
mnemonic
Description / EDD Help
Valid Range
Default
FCT Default
Deep
Default
Units
Write
R/W
18
CAS_IN
This parameter is the remote setpoint value, which must come
from another Fieldbus block, or a DCS block through a defined
link.
PV
19
SP_RATE_DN
The revision level of the static data associated with the
function block. The revision value will be incremented each
time a static parameter value in the block is changed.
Positive or zero
+INF
PV/Sec
Read only
20
SP_RATE_UP
The revision level of the static data associated with the
function block. The revision value will be incremented each
time a static parameter value in the block is changed.
Positive or zero
+INF
PV/Sec
Read only
21
SP_HI_LIM
The revision level of the static data associated with the
function block. The revision value will be incremented each
time a static parameter value in the block is changed.
PV/- 10%
100
PV
Read only
22
SP_LO_LIM
The revision level of the static data associated with the
function block. The revision value will be incremented each
time a static parameter value in the block is changed.
PV/- 10%
0
PV
Read only
23
GAIN
Dimensionless value used by the block algorithm in calculating
the block output.
Positive or zero
0
24
RESET
The integral time constant, in seconds per repeat.
Positive or zero
+INF
25
BAL_TIME
The difference value used in the block calculation for
bumpless transfer should ramp in a linear manner to zero in
the time specified by BAL_TIME.
Positive or zero
0
Sec
26
RATE
Defines the derivative time constant, in seconds.
Positive or zero
0
Sec
27
BKCAL_IN
The value and status from a lower block's BKCAL_OUT that is
used to prevent reset windup and to initialize the control loop.
OUT
28
OUT_HI_LIM
Limits the maximum output value.
OUT/- 10%
100
OUT
29
OUT_LO_LIM
Limits the minimum output value.
OUT/- 10%
0
OUT
30
BKCAL_HYS
The amount that the output must change away from its
output limit before the limit status is turned off, expressed as
a percent of the span of the output.
0 to 50 Percent
0.5%
%
31
BKCAL_OUT
The value and status required by an upper block’s BKCAL_IN
so that the upper block may prevent reset windup and provide
bumpless transfer to closed loop control.
PV
Read only
32
RCAS_IN
Target setpoint and status provided by a supervisory Host to
an analog control or output block.
PV
33
ROUT_IN
Target output and status provided by a Host to the control
block for use as the output (ROut mode).
OUT
34
SHED_OPT
Defines action to be taken on remote control device timeout.
0
35
RCAS_OUT
Block setpoint and status after ramping - provided to a
supervisory Host for back calculation and to allow action to be
taken under limiting conditions or mode change.
PV
Read only
36
ROUT_OUT
Block output and status - provided to a Host for back
calculation in ROut mode and to allow action to be taken
under limited conditions or mode change.
OUT
37
TRK_SCALE
The high and low scale values, engineering units code, and
number of digits to the right of the decimal point, associated
with TRK_VAL.
0-100%
TRK
38
TRK_IN_D
This discrete input is used to initiate external tracking of the
block output to the value specified by TRK_VAL.
On/Off
