Emerson Rosemount OCX 8800 Reference Manual page 165

Table 7-27: PID function block system parameters
Parameter
MODE_BLK
OUT
OUT_HI_LIM
OUT_LO_LIM
OUT_SCALE
PV
RATE
RCAS_IN
RCAS_OUT
RESET
ROUT_IN
Reference Manual
Index number
05
09
28
29
11
07
26
32
35
24
33
(continued)
Units
None
EU of OUT_SCALE
EU of OUT_SCALE
EU of OUT_SCALE
None
EU of PV_SCALE
Seconds
EU of PV_SCALE
EU of PV_SCALE
Seconds per repeat
EU of OUT_SCALE
Foundation Fieldbus
Descriptions
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 input value and
status.
The maximum output value
allowed.
The minimum output value
allowed.
The high and low scale val-
ues, engineering units code,
and number of digits to the
right of the decimal point
associated with OUT.
The process variable used in
block execution.
The derivative action time
constant.
Target setpoint and status
that is provided by a super-
visory host. Use when mode
is RCAS.
Block setpoint and status af-
ter 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.
The integral action time
constant.
Target output and status
that is provided by a super-
visory host. Used when
mode is ROUT.
155