Siemens Plant Central Clock TC100 - Manual (Page 17)

Description
2-1  © Siemens AG 2010 All Rights Reserved
SICLOCK ® TC100 Operating Instructions
2.3 Time receivers
The time receivers in the plant are connected solely via Ethernet.
2.3.1 Plant synchronization via Ethernet
Physical access
An Ethernet port with the following specification is provided to enable physical
access to the network:
• 100Base-TX via RJ-45 socket
Protocols
The following protocols are implemented:
• NTP server according to RFC2030
− Any/unicast mode
− Any/unicast mode with local time
− Multicast mode
− Multicast mode with local time
• Time synchronization in the SIMATIC procedure
− PCS7-compatible mode
− S5-compatible mode
The time message frames can be transmitted to each Ethernet port individu-
ally either every second or every 10 seconds.