Siemens CP 243-1 Operating Instructions Manual page 89

The next step is to configure this connection. In the "Properties - S7-connection" dialog,
specify whether your S7-300 or S7-400 system will be the active or passive node. If your S7-
300 or S7-400 system is to communicate with an S7-200 system, you will also need to
specify whether your system is acting as client or server.
If you want your S7-300 or S7-400 to be the client, select the entry "Establish an active
connection". If this entry is not selected, your system will be the server. Then specify that
your S7 connection is to be handled via TCP/IP. Select the item "TCP/IP". To allow an
TCP/IP connection to be established to your partner, you also need to specify its IP address.
Figure 3-1 Dialog "Properties – S7 connection"
In the "Address details" dialog, specify the communication end points (TSAPs) to be used.
You will find the TSAP of a connection in the S7-200 system in STEP 7 Micro/WIN 32 in the
dialog in which you configured the individual connections under the entry "Local Properties".
Enter the communication access point specified there in the "Address details" dialog in the
boxes provided for the TSAP of the partner. The communication access point assigned in
your S7-300 or S7-400 system for the connection is located in the same dialog under the
entry "Local" in the "TSAP" box. Take the value shown there and enter it in the "TSAP" box
under "Remote Properties" in STEP 7 Micro/WIN 32.
CP 243-1
Operating Instructions, 03/2012, C79000-G8976-C244-02
3.5 Configuration of a communications partner with STEP 7
Configuration
89