Siemens Simatic RTU303xC Series Operating Instructions Manual page 132

Configuration (WBM)
4.13 LAN
IP parameter
Note
DHCP client function
The DHCP client function of the RTU is activated when the following conditions are met:
• The "Specify IP address manually" option is disabled.
In this case, the DHCP server of the RTU cannot be activated.
The IP address of the RTU and optionally of the router and the addresses of up to two DNS
servers are obtained from a DHCP server in the network.
As the host name, the DHCP server has the station name of the RTU configured in the
"System" tab transferred to it.
If the option "Specify DNS server addresses manually" is enabled the entries obtained from
the DHCP server are overwritten.
If the option "Use router" is enabled the entries obtained from the DHCP server are
overwritten.
● Specify IP address manually
If the option is activated you configure the parameters manually.
– IP address
– Subnet mask
● Specify DNS server addresses manually
If the option is activated, you can configure one or two DNS servers for the LAN.
– Preferred DNS server
– Alternative DNS server
Any addresses obtained from a DHCP server are overwritten.
132
Enter the IP address.
Enter the subnet mask.
Enter the IP address of the preferred server.
Enter the IP address of a substitute server.
If no substitute server is available, enter the address of the preferred server.
Operating Instructions, 06/2019, C79000-G8976-C382-06
RTU303xC