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● IP configuration
The essential features of IP configuration are as follows:
– VLAN interface and the WAN interface of the RTU support IP addresses according to
– Address assignment of the LAN interface
– Address assignment for the default router and DNS servers
● Time-of-day synchronization
The RTU has the following options for time-of-day synchronization:
– NTP
– By mobile wireless network
– By telecontrol master station
For more information, refer to the section System time (Page 93).
For information on the format of the time stamp, refer to the section Overview (Page 149).
RTU3030C
Operating Instructions, 09/2017, C79000-G8976-C382-04
IPv4.
The IP address and the subnet mask can be set manually in the configuration.
The IP address can also be assigned automatically by the DHCP client function of the
RTU.
If the DHCP server function of the RTU is enabled, for the configuration PC to be
connected the IP address is assigned by the RTU in the network (normally the next
free address).
The addresses can be assigned manually or automatically with the DHCP client
function of the RTU. The RTU informs the DHCP server of its own station name so
that it can register the name with its DNS server if this is supported (DynDNS).
Time-of-day synchronization using NTP is practical only when no telecontrol
communication is configured.
Possible if no telecontrol communication is configured the network provider supports
the NITZ procedure (Network Identity and Time Zone).
If the RTU has a communications partner in the master station, it always obtains its
local time of day from the partner.
In most cases, the time of day is transferred as UTC time.
When using the ST7 protocol the time of day is transferred as the local time of the
control center. In this case the time zone and the daylight saving / standard time
switchover is disabled on the RTU because the control center handles this.
PCS 7 as master transfers the time of day with the DNP3 protocol as UTC and with
the IEC protocol as the local time of the PCS 7 PC.
Application and functions
1.9 Performance data
31
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