Siemens Plant Central Clock TC100 - Manual (Page 16)

Description
2-1  © Siemens AG 2010 All Rights Reserved
SICLOCK ® TC100 Operating Instructions
2.2 External synchronization
SICLOCK TC100 can be externally synchronized to the applicable, statutory nati-
onal time or GMT in order to automate or minimize manual interventions, such as
daylight saving time changes and leap seconds.
External synchronizations can be GPS or DCF77 radio clocks, servers (e.g. the
time signal from an NTP server), SICLOCK TC400 devices, SICLOCK TC100
devices or other signal sources. They are connected to the RADIO CLOCK of the
device.
The Ethernet port supports NTP servers as external synchronizations.
Possible RADIO CLOCKS are:
• SICLOCK GPS1000
• SICLOCK GPSDEC
(SICLOCK GPSDEC has been discontinued, please use SICLOCK GPS1000)
ವ
SICLOCK DCFRS
Third-party products can be connected passively via TTY. The following protocols
are supported:
• Demodulated DCF77
• Serial:
− Meinberg format (time-zone dependent)
− Meinberg format (time-zone independent)
− NMEA (0183/ZDA)
Get more information
Connecting external synchronization (Chapter 9.1)