Siemens CP 1243-8 IRC Operating Instructions Manual page 51

● Connection mode (RS232)
Configuration in the "Interfaces" tab
– MSC station
– Neutral
Figure 4-2
● Modems for dial-up networks
In addition to the TIM for communication of the CP via dial-up networks, the required TS
modules for the serial WAN interface of the proxy can be selected in theInterfaces tab,
see below.
● AT strings for TS modules
AT strings were added for the TS modules, see below.
● No SMS configuration
The configuration of the sending of SMS messages is not possible for the proxy in
STEP 7.
You can arrange for the sending of SMS messages in STEP 7 Basic for every data point.
CP 1243-8 IRC
Operating Instructions, 06/2015, C79000-G8976-C385-01
The serial interface is configured as an Ethernet interface. 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 serial WAN interface of the proxy is set to the connection mode "Neutral" if
communication is handled via a dial-up network or dedicated line.
Properties dialog, "Interfaces" tab with WAN interface to which a dial-up network is
connected.
Configuration and operation
4.6 Configuration in STEP 7 V5
51