Appendix C
Fieldbus Parameters
FieldPoint FP-3000 User Manual
C-6
©
National Instruments Corporation
CONTROL_OPTS
A list of options used to adjust the way control blocks, such as the
PID block, operate. The options are described in Table C-4.
CYCLE_SEL/CYCLE_TYPE
Unused in FieldPoint.
DD_RESOURCE
Unused in FieldPoint.
Table C-4.
Control Options
Options
Description
Bypass Enable
Allows you to set the
BYPASS
parameter and bypass the
algorithm’s control.
SP-PV Track in
Man
Causes the setpoint to track the process variable in
Man
.
SP-PV Track in
ROut
Causes the setpoint to track the process variable in
ROut
.
SP-PV Track in
LO
or
IMan
Causes the setpoint to track the process variable in
LO
or
IMan
.
SP Track Retained Target
Permits the setpoint to track the input value of the retained target
of the block. The retained target of the block is the lowest priority
mode set in the target mode field of the
MODE_BLK
parameter of
the block. For example, if the
RCas
bit is set in the target mode,
the setpoint tracks
RCAS_IN
.
Direct Acting
Defines the relationship between changes to the PV and changes
to the output. When set, an increase in the process variable
causes the output value to be increased. When clear, a decrease
in the process variable causes the output value to be decreased.
Track Enable
Enables tracking. If Track Enable is true, and
TRK_IN_D
is true,
TRK_VAL
overwrites the value at the output of the block.
Track in Manual
This enables tracking in
Manual
mode.
Use PV for
BKCAL_OUT
When set, this uses the process variable as the value for
BKCAL_OUT
, instead of the setpoint.
Obey SP Limits if
Cas
or
RCas
When set, this confines the setpoint to values within
SP_HI_LIM
and
SP_LO_LIM
, even when the setpoint comes from another
function block.
No
OUT
Limits in
Man
Unused in FieldPoint.