Introduction - Siemens SIMATIC NET CP 243-1 Technical Manual

09/02
1

Introduction

Definition and application
The CP 243-1 is a communications processor designed for operation in an S7-200
automation system. It is used for connecting an S7-200 system to Industrial
Ethernet (IE). The CP 243-1 also facilitates communication via Ethernet for the
low-end performance range of the S7 product family. As a result, S7-200 can be
remotely configured, programmed and diagnosed via Ethernet using STEP 7 Mi-
cro/WIN 32. Moreover, an S7-200 can communicate with another S7-200, S7-300
or S7-400 controller via Ethernet. It can also communicate with an OPC server.
In the open SIMATIC NET communications system, Industrial Ethernet is the net-
work for both the coordination level and the cell level. Technically, the Industrial
Ethernet is an electrical network built on the basis of a shielded coaxial cable,
twisted pair cabling or an optical network using a fiber optic cable. Industrial
Ethernet is defined by the international standard IEEE 802.3.
Continuous communication in the industry sector
Industrial Ethernet is an integral part of the SIMATIC NET concept, which together
with PROFIBUS and the AS Interface ensures continuous networking of the coor-
dination, cell and field levels.
Compatibility
The CP 243-1 (6GK7 243-1EX00-0XE0) described here can be used for S7 com-
munication. The CP 243-1 can be connected to various types of S7-200 CPUs
(222, 224, 226 and 226XM):
• CPU 222 Rel. 1.10 or higher
• CPU 224 Rel. 1.10 or higher
• CPU 226 Rel. 1.00 or higher
• CPU 226XM Rel. 1.00 or higher
A maximum of 2 extension modules can be mounted on the CPU 222. In contrast,
up to 7 extension modules can be connected to the 224, 226 and 226XM CPUs.
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.
CP 243-1
J31069-D0428-U001-A1-7618
Introduction
7