09/02 Features and functions
CP 243-1
J31069-D0428-U001-A1-7618
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2.2.2 Types of communication
The CP 243-1 is provided with three types of communication relationships that can
be applied either individually or in combination.
1. Connection to STEP 7 Micro/WIN 32
2. Connection to further, remote components of the SIMATIC S7 family
3. Connection to OPC-based applications on a PC/PG
2.2.3 Communication partners
• S7-200 CPU with CP 243-1
• S7-300 CPU with CP 343-1 or CP 343-IT
• S7-400 CPU with CP 443-1 or CP 443-IT
• PG/PC with OPC server
• PG/PC with STEP 7 Micro/WIN 32
In the STEP 7 HW-Config program, you can identify which types of S7-300 CPUs
and S7-400 CPUs support the S7 protocol, XPUT/XGET, and, hence, which ones
can communicate with the CP 243-1. When you select an S7-300 or S7-400 CPU
in the catalog window in the program, the selected CPU must support the "S7
communication" function.
For systems in the S7-300 series, XPUT/XGET can only be operated via Ethernet
with a communications processor of version 1.1 or higher. You can identify the
communications processor version by looking at the MLFB number, among other
things. If you use a CP 343-1, the MLFB number must contain the sequence
"EX11“.
The CP 443-1 ISO cannot communicate with the CP 243-1, since the CP 443-1
ISO do not have TCP/IP and RFC 1006 on board.
Attention
Only one CP 243-1 should be connected per S7-200 CPU. It cannot be guaranteed
that the S7-200 system will operate properly if additional CP 243-1 are connected.
Note
When communicating with an OPC server, it should be noted that the CP 243-1
does not support the service that automatically queries which objects are present
in the S7-200 (e.g. DBxx...).
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