The following table lists the system parameters for the Splitter function block:
Parameter |
Units |
Description |
|---|---|---|
ABNORM_ACTIVE |
None |
The indication that a block error condition not selected in BAD_MASK (on the function block level) is True (Active) or the indication that an error condition (at the module level) not selected in MERROR_MASK is True (Active) or a module status not selected in MSTATUS_MASK is True (Active). |
ALERT_KEY(1) |
None |
A user-assigned identification number reported in alarm messages from the block that allows HMI applications to sort and filter alarms and events. Set this parameter for each function block to indicate the physical unit the function block is associated with. This information can be used in the host for sorting alarms, and so on. |
BAD_ACTIVE |
None |
The indication that a block error condition selected in BAD_MASK (at the function block level) is True (Active) or the indication that an error condition (at the module level) selected in MERROR_MASK is True (Active) or a module status selected in MSTATUS_MASK 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 are True, the BAD_ACTIVE parameter becomes True. When any of the BLOCK_ERR conditions that are not included in BAD_MASK are True, ABNORM_ACTIVE becomes True. |
BAL_TIME |
Seconds |
Specifies the time for the second output switched to Cas mode to match its calculated value. |
BKCAL_IN_1 |
Units of SP of block connected to OUT_1 |
The value and status reflecting the BKCAL_OUT of the lower block associated with OUT_1. This information is used for initialization and to prevent windup in upstream blocks. |
BKCAL_IN_2 |
Units of SP of block connected to OUT_2 |
The value and status reflecting the BKCAL_OUT of the lower block associated with OUT_2. This information is used for initialization and to prevent windup in upstream blocks. |
BKCAL_OUT |
EU of SP |
The value and status required by the BKCAL_IN input of an upstream block that is used to prevent reset windup and to provide bumpless transfer to closed loop control. |
BLOCK_ERR |
None |
The summary of active error conditions associated with the block. Possible block errors for the Splitter function block are: |
CAS_IN |
EU of SP |
The remote setpoint value from an upstream block. |
HYSTVAL |
Percent of IN_ARRAY[2][1] - IN_ARRAY[1][1] |
The hysteresis value used in Splitter to determine whether to set the target at the locked value. |
IN_ARRAY |
None |
Array of four entries (X11, X12, X21, X22) that defines the setpoint range starting and ending points used in the calculation of OUT_1 (X11 and X12) and OUT_2 (X21 and X22). X11, X12, X21, and X22 are standard industry terms that correlate to the DeltaV parameters IN_ARRAY[1][1], IN_ARRAY[2][1], IN_ARRAY[3][1], and IN_ARRAY[4][1], respectively. |
LOCKVAL |
None |
Specifies OUT_1 to hold or to be driven to OUT_ARRAY[1][1] when the SP exceeds the upper end of the range defined by IN_ARRAY[2][1]. |
MODE |
None |
Parameter used to request and show the source of the setpoint used by the block. |
OUT_1 |
Units of block connected to OUT_1 |
The primary output value and status calculated by the block based on SP (in Auto and Cas modes). |
OUT_2 |
Units of block connected to OUT_2 |
The primary output value and status calculated by the block based on SP (in Auto and Cas modes). |
OUT_ARRAY |
None |
Array of four entries (Y11, Y12, Y21, Y22) that defines the block output range starting and ending points used in the calculation of OUT_1 (Y11 and Y12) and OUT_2 (Y21 and Y22). Y11, Y12, Y21, and Y22 are standard industry terms that correlate to the DeltaV parameters OUT_ARRAY[1][1], OUT_ARRAY[2][1], OUT_ARRAY[3][1], and OUT_ARRAY[4][1], respectively. |
SP |
Supplied by input |
The block's setpoint value. |
SP_RATE_DN |
Input units per second |
Ramp rate at which downward setpoint changes are acted on in Auto mode, in PV units per second. If the ramp rate is set to 0.0, the setpoint is used immediately. For the splitter blocks, rate limiting applies only in Auto mode. |
SP_RATE_UP |
Input units per second |
Ramp rate at which upward setpoint changes are acted on in Auto mode, in PV units per second. If the ramp rate is set to 0.0, the setpoint is used immediately. For control blocks, rate limiting applies only in Auto. For the splitter blocks, rate limiting applies in Auto mode. |
SP_WRK |
Input units |
The working setpoint of the block. It is the result of setpoint limiting and setpoint rate of change limiting. |
ST_REV(1) |
None |
The revision level of the static data associated with the function block. To support tracking changes in static parameter fields, the associated block's static revision parameter is incremented each time a static parameter field value is changed. Also, the associated block's static revision parameter is incremented if a static parameter field is written but the value is not changed. |
STATUS_OPTS(1) |
None |
The supported status option is IFS if Bad CAS_IN. |
STRATEGY(1) |
None |
Used to identify groupings of blocks. This data is not checked or processed by the block. |
Default values and data type information for the parameters are available by expanding the Parameter View window.