Planning Considerations For Time Synchronization - Honeywell Experion LX Client Manual

Time synchronization

Planning considerations for time synchronization

Controllers and CEEs obtain the start and end of Daylight Saving Time (DST) from
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Experion servers. For controllers and CEEs to automatically change to DST, the
Experion server's clock must be selected to automatically adjust clock for daylight
savings changes. DST changeover in the Experion server's clock triggers the
controllers and CEEs to change to DST, regardless of whether it's done automatically
by the operating system or enabled manually by the user within the DST period.
For controllers, CEEs, and Experion servers in the same time zone, whenever DST
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starts or ends, the controllers and CEEs clocks are adjusted either forward or backward
by 1 hour.
The start and end of DST is always identified from the Experion server. In the case
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where controllers, CEEs, and Experion servers are not in the same time zone;
controllers and CEEs will shift by one hour (irrespective of any time zone the controller
or CEE is in and also irrespective of if DST is applicable for controller or CEE time
zone) at the start and end of DST (applicable as per server time zone).
For controllers and CEEs that are in different time zones to the Experion servers,
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Honeywell recommends not to use Automatically Apply DST option and to manually
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