PAIM limits, quality, selection settings

Use the
Advanced
tab on the
Properties
 dialog box for Process Multi Sensor Analog Input (PAIM) instructions to configure settings for monitoring the input and signal for the sensor process variable (PV).
To configure limits, quality, and selection settings for PAIM instructions
  1. On the instruction in the routine, perform one of these actions:
    • On the Ladder or FBD instruction, select .
    • In the Structured Text editor, right-click the tag name and select
      Configure <tag name>
      .
  2. Select the
    Advanced
    tab.
  3. Configure these settings:
    Setting
    Description
    PV fail high
    Enter the high limit for input. Input above this limit is reported as poor quality.
    Deadband
    Enter the deadband for the high and low fail limits.
    Enter the deadband for the high and low fail limits.
    Use the deadband to select an error range above and below the limits when a failure is not reported. The deadband prevents unwanted rapid switching of the status.
    PV fail low
    Enter the low limit for input. Input below this limit is reported as poor quality.
    Has input
    Select the check box for each active input signal.
    Tag name
    Enter a label for each signal. The labels appear on the HMI and on the
    General
    tab.
    Use input
    Select the checkbox for each signal to use to calculate the final PV (average or median).
    PV Max
    Enter the maximum value for display of the PV. Values above this maximum are not displayed.
    PV Min
    Enter the minimum value for display of the PV. Values below this minimum are not displayed.
    Minimum number of good inputs for a good PV
    Enter the number of good inputs required for the PV to pass quality requirements. Inputs must fall within the
    PV fail high
     and
    PV fail low
     limits to be considered good.
  4. When online with the controller, monitor the
    Device state
     and
    Device issues
     indicators at the bottom left of the dialog box:
    • Device state
      . Displays the current device status: PV good, PV uncertain, or PV bad.
    • Device issues
      . Displays fault conditions: None, Any reject, Min good, Fail, or Configuration error.
  5. Select
    Apply
    .
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