Establishing A Connection To The Wbm Of The Rtu - Siemens SIMATIC RTU3030C Operating Instructions Manual

4.5.2

Establishing a connection to the WBM of the RTU

Using the HTTP/HTTPS protocol
You can establish a connection between the configuration PC and RTU using the HTTP
protocol:
● LAN connection
With a local connection from the configuration PC to the RTU you can connect directly. If
the RTU is in sleep mode, you need to change it to service mode by briefly pressing the
button.
● Connection via WAN (Internet/mobile wireless)
With HTTP connections via the Internet / mobile wireless network you need to use the
security protocol "OpenVPN", refer to the next section.
When no OpenVPN server exists and is configured, no HTTP connection between the PC
and RTU is established via the WAN. In this case no message is output when there are
unsuccessful connection attempts.
As an alternative you can use an HTTPS connection if you enable HTTPS in the
configuration and the RTU can be reached via a public IP address.
For the connection of a service PC to the RTU via the Web server of TCSB no OpenVPN is
required.
OpenVPN for HTTP connections from the configuration PC to the RTU via WAN
If you want to establish an HTTP connection to the WBM of the RTU from your configuration
PC via mobile wireless, you need to use OpenVPN. This requires the following:
● A configured OpenVPN server
– First set up an OpenVPN server.
– Configure the OpenVPN clients you require in the VPN network (configuration PC,
● Installed OpenVPN client on the configuration PC
– Install an open VPN client on the configuration PC.
– Before establishing the connection to the RTU, you need to connect the OpenVPN
RTU3030C
Operating Instructions, 09/2017, C79000-G8976-C382-04
4.5 Establishing the connection between RTU and configuration PC
"SINEMA Remote Connect - Server", Is recommended, see /5/ (Page 296).
RTUs).
If you use "SINEMA Remote Connect - Server" as the server, you can use the
"SINEMA Remote Connect - Client" application for the PC, see /6/ (Page 296). You
will find a Getting Started for the server and client in /7/ (Page 296).
client of the PC to the OpenVPN server.
Configuration (WBM)
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