Funk-Electronic Piciorgros GmbH
RTU-810
V2.30 - Page 93 of 126
4
Special Functions
4.1
IP Application Interface
The IP Application Interface is an additional data interface which is very similar to the
serial interfaces, but with IP as the communication method. It can be used to pass data,
which are structurally protocols designed for serial interfaces, over an IP link.
The important thing is that the RTU-810 is the endpoint for the IP communication.
SCADA protocols which are designed as IP protocols uses different IP addresses to
address each slave, therefore these protocols can't be used with the IP application
interface.
Using the IP application interface the IP connection ends at the RTU-810 and the
payload data inside the IP packet is extracted by the RTU-810 and used for further
routing, similar as using the serial interfaces.
All IP data must be addressed to the RTU-810 as the IP connection is just locally. To
route the data to different destinations in the radio network, the known mechanism of
address detection and the use of the routing tables can be applied to the data which was
sent inside the IP packet.
To make it even easier to understand: The IP application interface works exactly like the
two serial interfaces with the difference that the "physical" connection is not a simple
wire but an IP connection.
4.1.1
Tunneling a serial connection with the SIG-810 (Q2/3 2017)
The Piciorgros SIG-810 is a Serial-to-IP gateway which is designed for the use in
conjunction with the IP application interface.
The SIG-810 has a configurable serial interface which can be either RS-232 or RS-
422/485. On the other side it connects to the IP Application interface of a RTU-
810/TRM-810 or RTU-81.
This "extends" an existing serial connection basically to any possible length as long as
an IP connection via LAN or WAN is available between the SIG-810 and the RTU-810.
