Wan; Overview - Siemens Simatic RTU303xC Series Operating Instructions Manual

● Specify default router manually
If you use a router, activate the option.
– Default router
An address obtained from a DHCP server is overwritten.
● DHCP server active
If the option is active the RTU assigns the IP address and the DND server to the
configuration PC to be connected.
As default the DHCP server function of the RTU is activated.
Note
IP addresses of the configuration PC
When using a DHCP server you do not need to specify the addressing on the
configuration PC to be connected. When the PC is connected to the RTU, the RTU
assigns the PC an IP address. This is the next higher address after the RTU's own
address.
If the option is deactivated, you will need to assign a fixed IP address in the same subnet
as the RTU to the connected configuration PC manually.
Note
No address check
The RTU does not check the address bands. If If a duplicate IP address is detected, the
STATUS LED flashes red and the RTU is no longer reachable via the Ethernet interface.
Network settings when using OpenVPN
If you use OpenVPN, make sure that the LAN subnet of the RTU and the OpenVPN
subnet do not overlap otherwise no connection can be established to the RTU via
OpenVPN.
Since the network settings of the OpenVPN server are not always precisely known, we
recommend that you set the LAN subnet to 255.255.255.0 when using OpenVPN.
4.14

WAN

4.14.1

Overview

The following information on the mobile wireless connection of the RTU is displayed in the
Overview.
RTU303xC
Operating Instructions, 06/2019, C79000-G8976-C382-06
Enter the router IP address.
Configuration (WBM)
4.14 WAN
133