Configure PAH and monitor HART

Use the
Advanced
 tab on the
PAH Properties
 dialog box to configure Process Analog HART (PAH) instructions and monitor HART diagnostics.
To configure PAH instructions and monitor HART diagnostics
  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. Configure these settings:
    • HART inputs
      . Select or clear the checkbox for each input to inform the HMI faceplate that the connected device provides or does not provide PV, ST, TV, and QV inputs. These checkboxes only affect the visibility of these variables on the HMI faceplate.
    • Use HART digital variables' status information
      . Select or clear the check box to configure the instruction to use the HART communication status to generate information on the source and quality of HART variables.
  3. Monitor these settings:
    • Scaling limits
      . Monitor scaling limit values from the HART device. Use the
      HMI
      tab to configure the labels for unit values.
      • PV units
        ,
        Max
         and
        Min
        . Displays the scaled range of the analog PV from the device in PV engineering units.
      • Raw units
        ,
        Max
         and
        Min
        . Displays the corresponding range of the analog signal as provided or used by the HART analog I/O card; for example, 4.0 to 20.0 mADC, or 0.0 to 100.0 percent.
    • HART diagnostics
      . Displays diagnostic status icons, codes, and messages from the HART device.
  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 state, such as
      Live
      ,
      Diagnostic information
      , or
      Maintenance required
      .
    • Device issues
      . Displays fault conditions, such as
      HART communication lost
      or
      Module connection fault
      .
  5. Select
    Apply
    .
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