| You enable 1 computer on the Citect
network to be a time server (parameter [time]Server=1, set by the
computer wizard). The best computer is the I/O Server as this will
be always be connected to every Citect on a system, rather than say
Alarm server which may only be talking to half the clients. When a
Client starts up the time server will sent a time sync message.
Also at the [time]pollTime rate (default 24 hours) the time server
will send a time sync message to all it's connected clients to
adjust their time. When a Citect gets a time sync message it checks
to see if the time sync in enabled (parameter [time]Disable=0). If
disabled the Citect ignores the time sync message. If enabled the
Citect will check if the new time is out side of the deadband time
(parameter [time]Deadband=10). If the time is outside of the
deadband the Citect will adjust its clock to the new time. The
deadband is used to stop constant small changes in the time. When
the time is changes, Citect must re-sync all of its time related
tasks and this can take a long time (typically only on the trend
server as must re-sync all the trends).
If the parameter [time]RTsync is set on the time server then the
time server will re-sync it's time to the hardware clock before it
sends out a time sync message. This allows for the case when the
Windows clock has drifted against the hardware clock.
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