SIEMENS
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Siemens IK PI · 2015
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Application
(continued)
PROFINET/Industrial Ethernet
Accessories
Time synchronization
Highly redundant system
SICLOCK TC400 central plant clocks with SICLOCK GPS1000 wireless receiver
This application can satisfy the highest redundancy require-
ments. The system uses two SICLOCK TC400 central plant
clocks, each with separate SICLOCK GPS1000 wireless
receivers
One central plant clock is parameterized as the NTP server
master, the other as the NTP server slave. The NTP server slave
takes over if the NTP master or the connected wireless receiver
fails.
If SICLOCK GPS1000 wireless receivers are used, they should
be mounted as far away from each other as possible so that the
receiver with the better reception conditions can be used and,
for example, to avoid damage to both receivers in the event of a
lightning strike. Instead of using two GPS wireless receivers, one
SICLOCK DCFRS wireless receiver can of course be used.
Outdoor installation
Outdoor installation
NTP server
Master
NTP server
Slave
Twin wire
max. 1 000 m
GPS satellite
GPS satellite
ETH2
ETH1
SICLOCK
GPS1000
SICLOCK
GPS1000
SICLOCK
TC400
SICLOCK
TC400
Industrial Ethernet
SP01_00023
SIMATIC S7 Controller
© Siemens AG 2014