Siemens Simatic S7-200 System Manual page 237

Figure 7-21 Adding a Modem Connection
Connecting to the S7-200 with a Modem
After you have added a modem connection, you
can connect to an S7-200 CPU.
1. Open the Communications dialog box and
double-click on the Connect icon to display
the Modem Connection dialog box.
2. In the Modem Connection dialog box, click
Connect to dial the modem.
Configuring a Remote Modem
The remote modem is the modem that is
connected to the S7-200. If the remote modem is
an EM 241 Modem module, no configuration is
required. If you are connecting to a stand-alone
modem or cell modem, you must configure the
connection.
Modem
Expansion
The Modem Expansion wizard configures the
Wizard
remote modem which is connected to the S7-200
CPU. Special modem configurations are required
in order to properly communicate with the
RS-485 half duplex port of the S7-200 CPU.
Simply select the type of modem, and enter the
information as prompted by the wizard. For more information as prompted by the wizard. For more
information, refer to the online help.
1.
Figure 7-22 Connecting to the S7-200
Figure 7-23 Modem Expansion Wizard
Communicating over a Network
5.
Chapter 7
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