Points To Note When Configuring The Proxy - Siemens CP 1243-8 IRC Operating Instructions Manual

Configuration and operation
4.6 Configuration in STEP 7 V5
4.6.3

Points to note when configuring the proxy

Special properties of the proxy module "PROXY CP1243-8"
Like a TIM 3V-IE Advanced the proxy supports parallel connection to two WAN networks via
the serial and the Ethernet interface.
Compared with the TIM, the proxy has the following differences:
● Only ST7
Only ST7 is supported as the telecontrol protocol. The use of the CP in systems that use
the older ST1 protocol is not possible.
● Interface configuration
Both interfaces of the proxy can be configured.
● Station
The proxy can only be configured in a station. Use in a note station or master station is
not possible.
● No TD7 software
For the proxy, no TD7 software is configured, neither TD7onCPU nor TD7onTIM.
The required data is configured in STEP 7 Basic in the data point configuration.
● Time slave
The proxy can only be configured as a time slave. The function of time master is not
supported.
● "Mode" of SINAUT-dial-up networks
In the STEP 7 properties dialog of dial-up networks for connected stations with a proxy
only the "spontaneous" mode is supported.
● Connection mode (Ethernet)
Configuration in the "Interfaces" tab
– MSC station
– GPRS station
– Neutral
50
The communication is handled using the MSC protocol. The proxy is configured to
connect to the Internet as an MSC station via a DSL router.
The proxy is configured to connect to the Internet as a GPRS station via an MD720.
On the Ethernet interface, there is normal TCP/IP communication with the ST7
protocol. The proxy is not connected via GPRS and the MSC protocol is not activated.
Operating Instructions, 06/2015, C79000-G8976-C385-01
CP 1243-8 IRC