Setting Range Default Notes
Daylight savings is not applied to the controller when you select
the Etc/UTC time zone.
INFO
If a setting is changed on any controller in the network, the new setting is synchronised to all controllers in the network.
Table 18.2 Network time protocol settings
Setting Range Default Notes
Host -
Type the IP address or server address of the NTP server in this field. When either of the Host
fields have data inside them, it is no longer possible to configure the date or time manually.
Mode
• Unicast
• Multicast
Unicast
Unicast: The controller sends requests to the specified host and to request the date and time.
The controller updates the date and time when the host responds to the request.
Multicast: The controller waits for a date and time to be broadcast from a server on the host
location. The controller updates the date and time when a broadcast is received.
18.1.2 Setting the time manually
Use the Configure > Time settings interface in PICUS or the display unit to set the time manually.
When you change the time on any controller in the network, the new time is shared with all the controllers in the network through the
time master.
18.1.3 Using an external NTP server
Use the Configure > Time settings interface in PICUS to configure the NTP server.
INFO
For this option, the network design must allow the controllers to access the NTP server(s).
If two NTP servers are configured, then the NTP server with the lowest Stratum is the server used. If the NTP servers have the
same Stratum, then the NTP server configured in Server 1 is the server used.
18.1.4 NTP server not connected
The alarms NTP server 1 not connected, NTP server 2 not connected, or No NTP server(s) connected are activated when the NTP
server(s) are configured, but the controller did not connect to the server(s) within 10 minutes after the configuration is written to the
controller. These alarms are triggered if the controller network cannot access the NTP server(s), or if the NTP server(s) are not set
up correctly.
Configure the parameters for these alarms under Configure > Parameters > Communication > NTP. The alarm action is always
Warning and cannot be changed.
18.1.5 NTP server no response
The alarms NTP server 1 no response, NTP server 2 no response, or No NTP server time synchronisation are activated when the
controller was successfully connected to NTP server(s), but the server(s) did not respond to the controller for up to 22 minutes.
Configure the parameters for these alarms under Configure > Parameters > Communication > NTP. The alarm action is Warning
and cannot be changed.
DESIGNER'S HANDBOOK 4189340911K UK Page 486 of 521
To Next Page
Loading...
