PVSD active command source

Use the
Command source
 tab of the
PVSD Properties
 dialog box to:
  • Select Program, Operator, Operator Locked, External, or Maintenance as the source of commands and settings for the instruction.
  • Set In Service or Out of Service as the command source state. The instruction only accepts device commands and settings from the selected source when the state is In Service.
  • Select command source exceptions for the instruction commands and settings. By default, the commands and settings follow the current command source. Optionally, speed reference, start, and output datalink can be configured to only recognize Operator, Program, or External. Jog can be configured to only recognize Operator or External.
To select the active command source for Process Variable Speed Drive (PVSD) 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
    Command source
     tab.
    The
    Status
    indicator at the top of the tab:
    • Lists all potential command sources from highest priority on the left to lowest priority on the right.
    • Highlights all requesting command sources in black text.
    • Outlines the current command source for the instruction.
    • When the current command source releases its request, the next active requestor becomes the current command source.
  3. Set and clear command source requests:
    • Online command source request.
       When online, select the command source for the instruction. These commands take effect immediately.
      • Program
        . Select Program as the source of commands and settings for the instruction.
      • Operator.
         Select Operator as the source of commands and settings for the instruction.
      • Operator lock
        . Lock Operator as the command source. When Operator is locked, Program requests from logic are not accepted.
        IMPORTANT:
        Selecting Program when the command source is Operator Locked unlocks Operator and sets the Program command source request.
      • External/Release External.
         Select or release External as the source of commands and settings for the instruction.
      • Maintenance/Release maintenance
        . Select or release Maintenance as the source of commands and settings for the instruction.
      • In service/Out of service
        . Set In Service or Out of Service as the instruction command source state.
    • Exceptions
      . Use for each aspect of the drive (Speed reference, Start, Jog, Output datalink) to have that aspect follow the overall command source of the instruction, or to keep that aspect tied to a particular source (Only Operator, Only Program, or Only External). For example, by using this configuration, set the instruction for Jog only by local push-buttons (external source) while having the Speed reference and Start functions follow the instruction’s overall command source.
  4. View the read-only parameters:
    • Device state
      . When the
      Logix Designer
       application is online with the controller, the indicator displays the current device state, such as Stopped, Running, or Out of service.
    • Device issues
      . When the
      Logix Designer
       application is online with the controller, the indicator displays fault conditions, such as Drive fault or I/O fault.
  5. Select
    Apply
    .
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