Configure communications timeout

The
OPC communications timeout
 area allows you to configure the
FactoryTalk® Batch
 Server’s watchdog timer.
To configure the
FactoryTalk Batch
 Server's watchdog timer
  1. Open
    FactoryTalk Administration Console
     and sign in to the
    FactoryTalk
     Network Directory.
  2. In
    FactoryTalk Administration Console
    Explorer
    , do one of the following:
    • For a new
      FactoryTalk Batch
       Server, right-click the application or the area name and select
      Add New Server
      FactoryTalk Batch Server
      .
    • For an existing
      FactoryTalk Batch
       Server, expand the application or the area name, right-click the server, and select
      Properties
      .
  3. In the
    FactoryTalk Batch Services Properties
     dialog, select the
    General
     or
    Secondary Server
     tab.
  4. In the
    OPC communications timeout
     area, in the
    Period (msec)
     box, enter the watchdog timer setpoint.
    The
    Period (msec)
     box allows you to define the time interval (in milliseconds) that the primary or secondary
    FactoryTalk Batch
     Server uses to check the quality of communication with
    FactoryTalk Live Data
     and OPC servers and to attempt to reconnect logic in the case of lost data server connections. The default value is
    10,000
     msec.
  5. In the
    Allowable failures
     box, enter the Set/Reset retry maximum.
    The
    Allowable failures
     box allows you to define how many consecutive failed watchdog set or reset periods that the primary or secondary
    FactoryTalk Batch
     Server permits before a
    FactoryTalk Live Data
     server or OPC data server connection status is marked BAD and batches using that data server respond according to their configured
    Hold propagation
     type. The default is
    5
    .
    IMPORTANT: When the watchdog times out in the PCD, the PLI should be designed to set the Phase Failure Tag to a nonzero value that represents an understandable message in the Phase Failure Enumeration Set such as
    PCD1 Batch Watchdog Timed Out
    .
    TIP:
    The
    recommended configuration
     for Batch watchdog and PCD watchdog is that the PLC watchdog timer setpoint must be configured to have a value that is
    5 % or less
     of the
    total
     value of the
    FactoryTalk Batch
     Server watchdog timer’s period value and allowable failures value.
    Example:
     If the server’s watchdog timeout period is set to 10000 milliseconds (10 seconds), and the allowable failures is set to 5, then set the PLC watchdog timer setpoint to 47500 milliseconds (47.5 seconds):
    .95 (5 x 10000) = 47500
  6. Perform one of the following:
    • To save all changes, select
      Apply
      .
    • To save all changes and close the
      FactoryTalk Batch Services Properties
       dialog, select
      OK
      .
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