Fisher FIELDVUE DVC6200f Instruction Manual page 138

Detailed Setup—PID Function Block
July 2013
Table 4‐32. PID Function Block System Parameters Definitions (Continued)
Label
PARAMETER_NAME
Remote Out Input
ROUT_IN
Shed Options
SHED_OPT
Remote Cascade Output
RCAS_OUT
Remote Out Output
ROUT_OUT
Tracking Scale
TRK_SCALE
Tracking Input Discrete
TRK_IN_D
Tracking Value
TRK_VAL
Feed Forward Value
FF_VAL
Feed Forward Scale
FF_SCALE
Feed Forward Gain
FF_GAIN
136
Index RO / Block
Number RW Mode
Status
33 ALL
Value
0=Invalid
1=Normal Shed, Normal
Return
2=Normal Shed, No Return
3=Shed to Auto, normal
return
4=Shed to Auto, no return.
Target mode changes to
Auto on detection of a shed
condition
5=Shed to Manual, normal
34 ALL
return
6=Shed to Manual, No
return. Target mode
changes to MAN on
detection of a shed
condition.
7=Shed to retained target,
normal return
8=Shed to retained target,
no return. (Change target to
retained target)
35 RO N/A
36 RO N/A
MAN
37
OOS
Status
38 ALL
Value
Status
39 ALL
Value
Status
40 ALL
Value
MAN
41
OOS
MAN
42
OOS
Range Initial Value
BAD:
NoCom:
NoVal:
const
0 Trk
0=Invalid
Dynamic
Dynamic
100
0
%
2
BAD:
NC:
const
0
BAD:
NC:
const
0
BAD:
NC:
const
0
100
0
%
2
0
-Continued-
Instruction Manual
D103412X012
Description
Data Type: DS‐65
Target output and status that is provided by a
supervisory host. Used when mode is ROUT.
Data Type: Uint8
Defines action to be taken on remote control
device timeout.
Normal Return - actual mode changes to the next
lowest priority non-remote mode permitted but
returns to the target remote mode when the
remote computer completes the initialization
handshake.
No Return - Target mode changes to the next
lowest priority non-remote mode permitted. The
target remote mode is lost, so no return occurs.
Data Type: DS‐65
Block setpoint and status after ramping, filtering,
and limiting that is provided to a supervisory host
for back calculation to allow action to be taken
under limiting conditions or mode change. Used
when mode is RCAS.
Data Type: DS‐65
Block output that is provided to a supervisory host
for a back calculation to allow action to be taken
under limiting conditions or mode change. Used
when mode is RCAS.
Data Type: DS‐68
The high and low scale values, engineering units
code, and number of digits to the right of the
decimal point associated with the external tracking
value (TRK_VAL).
Data Type: DS‐66
Discrete input that initiates external tracking of the
block output to the value specified by TRK_VAL.
Data Type: DS‐65
The value (after scaling from TRK_SCALE to
OUT_SCALE) applied to OUT in LO mode when
external tracking is enabled by TRK_IN_D.
Data Type: DS‐65
The feedforward control input value and status.
Data Type: DS‐68
The high and low scale values, engineering units
code, and number of digits to the right of the
decimal point associated with the feedforward
value (FF_VAL).
Data Type: Float
The feedforward gain value. FF_VAL is multiplied
by FF_GAIN before it is added to the calculated
control output. A value of 0 disables feedforward.