Configure the Device Wall-clock Updates for Daylight Saving Time

Managing daylight saving time (DST) changes is crucial for maintaining operational continuity in industrial settings. Adjusting Logix controller settings promptly can prevent discrepancies in time-sensitive processes.
FactoryTalk Action Manager
 provides a solution to automate the process, which helps to keep smooth operations throughout the year.
This section shows the process of updating the device wall-clock for DST settings in
FactoryTalk Action Manager
. The process involves configuring triggers, actions, and tasks to enable, keep, and disable DST settings at the appropriate times.
Prerequisite
  • Install
    FactoryTalk Linx
     version 6.30.00 or later.
Step 1. Configure triggers for DST
A trigger defines the timing and recurrence of an action. You need to set up three triggers for Logix clock changes that include daylight saving time. This is accomplished using the clock update action's advanced DST start, keep, and end setting to change the Logix wall-clock and DST adjustment.
TIP:
  • The scheduled times for DST triggers are based on the time zone of the computer running
    FactoryTalk Action Manager
    .
  • The start trigger initiates at the start of the daylight saving time periods and repeats every 12 months.
  • The keep trigger repeats daily (or at an interval of your choosing) throughout the year.
  • The end trigger initiates at the end of the daylight saving time periods and repeats every 12 months.
  1. From the
    FactoryTalk Action Manager
    Configuration
     menu, select
    Localhost(Localhost)
     >
    Resource
     >
    Triggers
    , and then select
    Create trigger
    .
  2. (optional) Specify the name and description of the trigger.
  3. In
    Type
    , select
    Date Time Based Triggers
    .
  4. In
    Trigger Recurrence
    , configure the following settings:
    • For the start trigger
      • Set the start date to
        March 1
        .
      • Set the start time:
        • In Standard Time:
          at 02:00:00 AM
          .
        • In Daylight Saving Time:
          at 03:00:00 AM
          .
      • Set the recurrence to
        Monthly, Every 12 months
        , and
        on the second Sunday
        .
    • For the keep trigger
      • Set the start date and time to
        March 1 at 02:00:00 AM
        .
      • Set the recurrence to
        Hourly
        , and
        Every 1 hours 0 minutes
        .
    • For the end trigger
      • Set the start date to
        November 1
        .
      • Set the start time:
        • In Standard Time:
          at 01:00:00 AM
          .
        • In Daylight Saving Time:
          at 02:00:00 AM
          .
      • Set the recurrence to
        Monthly, Every 12 months,
         and
        on the first Sunday
        .
  5. Select
    Save
    .
TIP:
  • This example is based on DST changes in the US. Dates may vary for other countries and regions.
  • To configure a yearly trigger, select the recurrence
    Every 12 months
    .
  • You can preview and confirm the trigger schedule in the infotip.
  • After adjusting the system clock or time zone on the server computer, save the configuration to apply your changes.
Step 2. Configure actions for DST
An action defines the behavior of
FactoryTalk Action Manager
. You need to set up three actions for enabling, keeping, and disabling DST during DST transitions.
  1. From the
    FactoryTalk Action Manager
    Configuration
     menu, select
    Localhost(Localhost)
     >
    Resource
     >
    Actions
    , and then select
    Create action
    .
  2. (optional) Specify the name and description of the action.
  3. Select
    Add
    .
    You can add devices via
    FactoryTalk Linx
     Network Browser or by entering their device paths.
    TIP: A maximum of 1000 devices are supported for one action.
  4. Select
    Advanced Settings
     to configure DST:
    • For the start action, enable daylight saving time.
    • For the keep action, keep daylight saving time.
    • For the end action, disable daylight saving time.
  5. Select
    Save and close
    .
  6. Select
    Wall-clock Update
     to update selected devices or select Run to update all.
  7. Select
    Save
    .
Step 3. Configure tasks for DST
A task coordinates the actions in response to triggers. You need to set up three tasks for DST:
  • The start task repeats every year on the 2nd Sunday in March at 2:00 AM with an action to enable the DST settings.
  • The keep task repeats every hour throughout the year with an action to keep the DST setting.
  • The end task repeats every year on the 1st Sunday in November at 2:00 AM with an action to disable the DST settings.
TIP: This example is based on DST changes in the US. Dates may vary for other countries and regions.
  1. From the
    FactoryTalk Action Manager
    Configuration
     menu, select
    Localhost(Localhost)
     >
    Resource
     >
    Tasks
    , and then select
    Create task
    .
  2. (optional) Specify the name and description of the action.
  3. Consider the following operations:
    • For the start task:
      • In
        Trigger(s) used to start the actions(s)
        , add the start trigger.
      • In
        Action(s) to be started by the Trigger(s)
        , add the start action.
    • For the keep task:
      • In
        Trigger(s) used to start the actions(s)
        , add the keep trigger.
      • In
        Action(s) to be started by the Trigger(s)
        , add the keep action.
    • For the end task:
      • In
        Trigger(s) used to start the actions(s)
        , add the end trigger.
      • In
        Action(s) to be started by the Trigger(s)
        , add the end action.
  4. Select
    Save
    .
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