National Instruments NI-FBUS - Manual (Page 80)

Chapter 4 Parameters
© National Instruments Corporation 4-15 NI-FBUS Configurator User Manual
CYCLE_SEL (Tuning)
Identifies the block execution methods available. Unused in National
Instruments FP-3000.
CYCLE_TYPE (Tuning)
Used to select the block execution method. Unused in National
Instruments FP-3000.
DD_RESOURCE (Diagnostic)
Unused in FieldPoint.
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 output value to be increased. When Direct
Acting is clear, an increase in the process variable causes the
control block 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.
Use PV for BKCAL_OUT When set, uses the process variable as the value for
BKCAL_OUT , instead of the setpoint.
Obey SP Limits if Cas or
RCas
When set, 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.
Table 4-11. Control Options (Continued)
Options Description