Engineering via SICAM WEB
SICAM RTUs, User Manual SICAM CMIC 155
DC8-001-2.09, Edition 08.2016
5.1.5.1.1 Time Synchronization with Multi-Point Traffic
The time is sent from a central station (time master) to SICAM CMIC. The time master must
synchronize at least each 60 s, in order that the minimum resolution of 10 ms is achieved.
With failure of the time synchronization the target device records a warning in the diagnosis
after 10 min.
5.1.5.1.2 Time Synchronization with Dial-upTraffic
The time is sent from a central station (time master) to SICAM CMIC. A synchronization can
be performed only upon setup of a connection.
5.1.5.1.3 Time Synchronization with Ethernet
SNTP/NTP Client
The settings for the (S)NTP client reside in the directory tree under
SICAM CMIC | Master module | Network settings | NTP/SNTP time synchronization cli-
ent.
With communication according to IEC 60870-5-104 or IEC 61850, the time can be synchro-
nized via NTP or SNTP. To achieve that, you can enter the IP address of up to 4 NTP servers,
as well as the cycle time of the NTP synchronization.
For the time synchronization, the current NTP server is determined by "voting". This takes
place according to the following weighting:
• Attainability
• Stand-alone (NTP server does not receive a time)
• Distance (with regard to the time)
A voting is performed after each 3-fold cycle time (parameter NTP cycle time). The mini-
mum voting time is 1 hour. Upon failure of the time synchronization the target device records a
warning in the diagnosis. With time synchronization via another automation unit (without NTP
server) the warning is recorded after 10 minutes.
The description of the parameters reside in the manual SICAM RTUs Common Functions Pro-
tocol Elements, chapter "LAN Communication (104)", section "Time Synchronization", as well
as chapter "LAN Communication (61850)", section "Time Synchronization".
To Next Page
Loading...
Need help?
General
