National Instruments FP-3000 - Manual (Page 83)

Appendix B Fieldbus Parameters
© National Instruments Corporation B-5 FieldPoint FP-3000 User Manual
CLR_FSTATE (Faultstate, Option)
Writing Clear to this parameter causes the device-wide faultstate to be
cleared and output blocks to resume normal execution. Also see
SET_FSTATE and FAULT_STATE parameters.
CONFIRM_TIME (Alarming)
The lower bound on the time the device waits to send alert report messages
if no confirmation is received from a host.
CONTROL_OPTS (Option, Scaling)
A list of options used to adjust the way control blocks, such as the PID
block, operate.
Table B-2. Control Options
Options Description
Bypass Enable If set, lets you 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 Causes 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. For example, consider a case with a
fixed
SP while the process variable varies. When Direct
Acting is set, an increase in the process variable causes the
control block’s output value to be increased. When Direct
Acting is clear, an increase in the process variable causes the
control block’s output value to be decreased.
Track Enable Enables external tracking. If Track Enable is true, and
TRK_IN_D is true, TRK_VAL overwrites the value at the output
of the block except when Man is the target mode.
Track in Manual Enables tracking in Manual mode.