PAID input values and commands

Use the
General
tab on the
Properties
 dialog box for Process Dual Sensor Analog Input (PAID) instructions to monitor values for the process variable (PV) and two inputs, and to send online commands to select the PV value.
To monitor input values and send online commands for PAID 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. Monitor the input values for the process variable, signal A, and signal B.
    TIP: Use the
    HMI
    tab to add a label for signal A and signal B and a label that identifies the units for all three values.
  3. 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, Fail, or Configuration error.
  4. When online with the controller, use these
    Online commands
    .
    NOTE: The action is immediate if the command request does not need to be confirmed by the operator. If the command request requires a signature, this will enforce security from the HMI and disable commands and settings from the Logix Designer dialog.
    Online command
    Description
    Maximum
    Sets the PV value to the higher of the two input values.
    Minimum
    Sets the PV value to the lower of the two input values.
    A:Signal A
    Sets the PV value to input A.
    Average
    Sets the PV value to the average of the two input values.
    B:Signal B
    Sets the PV value to input B.
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