View expression values

In the
Binding Requirement Expression Values
 dialog box, a list of units is displayed that shows the potential legal binding candidates for a unit requirement. Each unit requirement displays:
  • The unit name
  • The current value (
    True
    or
    False
    ), which shows whether unit binding candidates meet the selected binding requirement
  • The order of the units, based on the evaluation of the binding preference expressions
    TIP:
    If all preferences evaluate equally, the unit list is displayed with the lowest to highest equipment IDs, which are defined in the Area Model.
  • The current value, which dynamically updates as the inputs to the expression change, and which may reorder the units when the dialog box is closed and reopened
  • An expression value indicating whether the binding candidates meet the selected binding requirement
    TIP:
    If
    {???}
     is displayed in the dialog box, an expression cannot be evaluated by the
    FactoryTalk Batch
     Server.
View expression values for unit binding requirements and preferences during batch execution.
To view expression values for unit binding requirements and preferences
  1. Select
    Batches
    .
  2. Select the batch that has the unit requirement expression data you want to view.
  3. In the
    Batch Detail
     display, do either of the following:
    • For a unit procedure or an operation batch, select the procedure.
    • For a batch procedure, select a step to see that step’s unit requirement, or select the procedure to see all unit requirements associated with the batch procedure.
  4. Select the
    Binding
     tab. Summary information for the unit requirements is displayed.
    TIP:
    To find a unit requirement in a list, select the
    Filter
     field and enter information about the unit. You can filter unit requirements by name, type, and class/instance.
  5. Select the unit requirement.
  6. In the
    Unit Requirement
    details, under
    Binding Requirements
    , select either a binding requirement or a binding preference to display the real-time values of the expressions.
    • For binding requirements, the
      Binding Requirement Expression Values
       dialog box is displayed.
    • For binding preferences, the
      Binding Preference Expression Values
       dialog box is displayed.
  7. View the expression data.
    TIP:
    The current value updates in real-time.
  8. When finished, select
    Close
    .
  9. In the
    Unit Requirements
    dialog box, select
    Close
    .
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