Input Selector function block parameters

The following table lists the parameters for the Input Selector function block.

Table: Input Selector function block parameters
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 (BLCOK_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.
BLOCK_ERR	None	The summary of active error conditions associated with the block. The possible block errors are: Out of Service - The block is in Out of Service mode. Output Failure - The write to the output failed or the DST is bad. Input Failure/Bad PV - The source of the block's process variable is bad.
DISABLE_1	None	This parameter, when true, disables IN_1. A disabled input is not used by SELECT_TYPE configured algorithms.
DISABLE_2	None	This parameter, when true, disables IN_2. A disabled input is not used by SELECT_TYPE configured algorithms.
DISABLE_3	None	This parameter, when true, disables IN_3. A disabled input is not used by SELECT_TYPE configured algorithms.
DISABLE_4	None	This parameter, when true, disables IN_4. A disabled input is not used by SELECT_TYPE configured algorithms.
IN_1	Determined by supplying block or source.	The first analog input value and status.
IN_2	Determined by supplying block or source.	The second analog input value and status.
IN_3	Determined by supplying block or source.	The third analog input value and status.
IN_4	Determined by supplying block or source.	The fourth analog input value and status.
MIN_GOOD	None	Minimum number of usable inputs for the result to be not bad.
MODE	None	The mode record of the block. MODE contains the actual, target, permitted, and normal modes. In some function blocks, this parameter is used to request and show the source of the setpoint, the source of the output, and/or the block operating state.
OP_SELECT	None	Valid range is 0 through 4. If non-zero, selects the corresponding input (that is, 2 selects IN_2). If zero, the algorithm selected by SELECT_TYPE selects input.
OUT	EU of OUT_SCALE or Percent or EU of IN	The analog output value and status. The number of outputs is an extensible parameter in some blocks.
OUT_RANGE⁽¹⁾	None	The display scaling for the output (OUT). It has no effect on the block. You can set the high and low values, the engineering units, and the number of digits to the right of the decimal point.
SELECT_TYPE	None	If OP_SELECT is zero, determines the selection type. The following are valid selection types: First Good Minimum Maximum Middle Average Hot Backup
SELECTED	None	Output indicating the selected input or the number of usable inputs.
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	None	Status options allow you to select options for status handling and processing. The available options are: Uncertain if Man mode Use Uncertain as Good
STRATEGY⁽¹⁾	None	Used to identify groupings of blocks. This data is not checked or processed by the block.

⁽¹⁾ These parameters are only visible when the function block is extended to a fieldbus device.

Related information

Status options