Controller Properties dialog box - Redundancy tab

The
Controller Properties
 dialog box displays controller configuration information for the open project and, when online, for the attached controller. Use the
Redundancy
tab to configure the redundancy features of a controller. Redundancy is the use of two or more controllers, each carrying out the same function, to improve reliability or availability.
The ability to change the settings on this tab can be controlled by
FactoryTalk Security
 permissions.
TIP:
This tab is available only if the controller type supports redundancy.
TIP: To open the Controller Properties dialog box - Redundancy tab:
  1. On the
    Online
    toolbar, click the
    Controller Properties
     icon.
  2. On the
    Controller Properties
    dialog box, click the
    Redundancy
     tab.
The Redundancy tab provides these options.
  • Redundancy Enabled
    Use to enable redundancy for the controller.
    This control is unavailable while online and is cleared by default.
  • Redundancy Status
    This section provides status information for the connected controller.
    • Chassis ID - Displays the ID of the chassis in which the controller resides.
    • Chassis State - Indicates the redundancy state of the entire chassis. Possible states include:
      • Unsupported
      • Undetermined
      • Primary with Synchronized Secondary
      • Primary with Disqualified Secondary
      • Primary with no Partner
      • Synchronized Secondary
      • Disqualified Secondary with Partner
      • Disqualified Secondary with no Partner
      • Primary Locked for Update
      • Secondary Locked for Update
        If redundancy is not enabled for the controller, or if it is offline, this field is empty.
    • Module State - Indicates the redundancy state of the controller. Possible states include:
      • Unsupported
      • Undetermined
      • Primary with Synchronized Secondary
      • Primary with Disqualified Secondary
      • Primary with no Partner
      • Synchronizing Primary
      • Synchronizing Secondary
      • Synchronized Secondary
      • Disqualified Secondary with Partner
      • Disqualified Secondary with no Partner
      • Primary Locking for Update
      • Primary Locked for Update
      • Secondary Locking for Update
      • Secondary Locked for Update
        If redundancy is not enabled for the controller, or if it is offline, this field is empty.
    • Module Compatibility - Indicates the module's compatibility with the corresponding module in the partner chassis. Possible values include:
      • Undetermined
      • No Compatible Partner
      • Fully Compatible Partner
        If redundancy is not enabled for the controller, or if it is offline, this field is empty.
  • Partner Status
    This section provides status information for the partner module.
    • Mode - Displays the partner module's mode. Valid modes include:
      • Faulted
      • Run
      • Program
      • Test
    • Partner Connection Not Established- The Partner Module State is one of these states:
      • Undetermined
      • Primary with Disqualified Secondary
      • Primary with no Partner
      • Synchronizing Primary
      • Synchronizing Secondary
      • Disqualified Secondary with Partner
      • Disqualified Secondary with no Partner
      • Primary Locking for Update
      • Secondary Locking for Update
    • Unknown - This value is displayed for any Partner Connection Not Established mode.
      It is also used when the partner is not designated as Fully Compatible.
      If redundancy is not enabled for the controller, or if it is offline, this field is empty.
    • Key Switch Position - Indicates the partner module's key switch position. Possible positions include:
      • Run
      • Remote
      • Program
      • Unknown - This value is displayed for any Partner Connection Not Established mode.
        If redundancy is not enabled for the controller, or if it is offline, this field is empty.
    • Key Switch Mismatch (read-only) – Indicates that the key switch position in the primary controller does not match the key switch position in the secondary controller. The color blue indicates a mismatch. This field is unavailable for any Partner Connection Not Established mode.
  • Partner Minor Faults
    Indicates minor faults that are set in the partner controller. If the button is blue, then the specified minor fault is set.
    For 1756-L7x controllers, the minor fault indicator turns blue on both the Primary and Secondary controller. For 1756-L8z controllers, the minor fault indicator turns blue only on the Primary controller.
    These buttons are read-only. For any Partner Connection Not Established mode, or if redundancy is not enabled for this controller, or the controller is offline, these buttons are unavailable.
    TIP:
    When using one of the 1756-L7x controllers,
    Battery
    is replaced by the
    Energy Storage
    .
TIP:
Serial Port
 is not shown for controllers with no serial port. For example, the 1756-L7x controllers have replaced the serial port with a higher performance USB port for uploading and downloading.
  • These features are not supported when redundancy is enabled:
    TIP: If you attempt to activate any of these features when redundancy is enabled, the system will either display an error and not allow you to continue, or will display an error during verification.
    • Embedded controller Ethernet port
    • Event tasks
    • Inhibited tasks
    • License Source Control
    • Motion groups, axes and coordinate systems
    • Unicast connections
    • Safety partner in a redundant chassis
    • Produced safety tags
    • Consumed safety tags
    • OPC UA Access
    • Non-concurrent safety connections
    • HMIBC tags and instructions
    • Match Project to Controller
       feature
    • With redundancy enabled, Equipment sequences are supported only on 1756-L8zP controllers
    • Bumpless output connections controlled by IOT instructions
    • Listen Only or Input Only connections for FLEX 5000 I/O or devices that utilize Highly Integrated Hart from a redundant controller (There is no ability for another controller to create listen only or dual-own for these types of connections.)
  • Advanced
    Select to access the
    Advanced Redundancy Configuration
     dialog box to configure additional redundancy features.
    This button is unavailable if redundancy is not enabled.
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