The following table lists the system parameters for the Lab Entry function block:
Parameter |
Unit |
Description |
|---|---|---|
ABNORM_ACTIVE |
None |
The indication that a block error condition not selected in BAD_MASK (on the function block level) is True (Active). |
BAD_ACTIVE |
None |
The indication that a block error condition selected in BAD_MASK (at the function block level) is True (Active). |
BAD_MASK |
None |
The set of active error conditions that triggers a user-defined Bad condition. The user selects a subset of block error (BLOCK_ERR) conditions in the BAD_MASK parameter. When any of these conditions is True, the BAD_ACTIVE parameter becomes True. When any of the BLOCK_ERR conditions not included in BAD_MASK is True, ABNORM_ACTIVE becomes True. |
BLOCK_ERR |
None |
The actual error status of the function block. |
DELAY |
Seconds |
The time elapsed between taking a grab sample and entering the lab analysis results in the block. This value should be between MIN_DELAY and MAX_DELAY. |
LAST_VALUE |
EU of OUT_SCALE |
The value of the previous sample value written to OUT. |
MAX_DELAY |
Seconds |
The maximum allowed time delay in processing a grab sample for the analysis value to be accepted. This can be a maximum of 86,400 seconds (24 hours). However, the maximum delay that affects the NN block's automatic correction mechanism is established by the Time to Steady State configured in the DeltaV Neural application. If MAX_DELAY is less than MIN_DELAY the delay parameters go to their default values: MAX_DELAY = 86400 and MIN_DELAY = 0. |
MIN_DELAY |
Seconds |
The minimum allowed time delay in processing a grab sample for the analysis value to be accepted. Valid range is from 0 to MAX_DELAY. |
MODE |
None |
Parameter used to show and set the block operating state. MODE contains the actual, target, permitted, and normal modes. |
OUT |
EU of OUT_SCALE |
A measurement value obtained through lab analysis of a grab sample. |
OUT_HI_LIM |
EU of OUT_SCALE |
The maximum lab entry value that may be written to OUT. |
OUT_LO_LIM |
EU of OUT_SCALE |
The minimum lab entry value that may be written to OUT. |
OUT_SCALE |
None |
The high and low scale values, engineering units code, and number of digits to the right of the decimal point associated with OUT. |
TRIGGER |
None |
Sets the current SAMPLE and DELAY values for use by the Neural Network block's automatic correction. If enabled, these values will be used by the NN function block to modify the CORR_BIAS value. Resets after two block executions. |