Time server
Order No. 2089 00
Page 14
4. Time server
As a time server, the Gira S1 can send the current time to the KNX bus at configurable intervals. For
this, first you activate the "Time server" parameter in the "General" parameter view so that the param
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eter page “Time server” becomes visible (see chapter 7.5 “Parameters”). You configure then the
respective desired interval with the "Send time" and "Send date" parameters. The time sent is obtained
from the system time. This is synchronised with a NTP server which can be configured via device
website. The interval for sending the communication object 52 “Date and time” to the KNX bus is the
shorter one of the parameters "Send time" (communication object 50) and "Send date" (communica
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tion object 51) if they differ.
The device can be configured for various UTC time zones. The "Time zone" parameter used for this is
located in the "General" parameter view.
Time changeover is taken into account either automatically depending on the time zone set or not at
all. A "Generic Time Zone w/o DST" must be parameterised so that no automatic time changeovers
are carried out.
The time server will only send the date and time if at least one successful NTP synchronisation has
been executed after device startup. This is to prevent the sending of a wrong system time.
With the time server function, a communication object is provided with which the sending of the time/
date can be triggered (trigger). For more details, see chapter 7.6 “Object table”.
The time server function is deactivated at delivery.
