Siemens SICLOCK TC 400 - Manual (Page 16)

Description
2-14 © Siemens AG 2007 All Rights Reserved
SICLOCK ® TC 400
2.3 Time receivers
The time receivers of the plant can be connected via Ethernet or directly on the
device via point-to-point connections.
2.3.1 Plant synchronization via Ethernet
Physical access
There are four Ethernet interfaces available as physical access to the network
with the following specification:
• 100Base TX via RJ-45 socket
Protocols
The following protocols have been implemented:
• NTP server according to RFC2030
− Any/unicast mode
− Multicast mode
− Multicast mode with local time
• Time synchronization with the SIMATIC method
− PCS7-compatible mode
− S5-compatible mode
The time telegrams can be sent individually at each Ethernet port every sec-
ond, every 10 seconds or every minute.