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03/03
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Introduction
Definition and application
The CP 243-1 IT is a communications processor designed for use in an S7-200
programmable controller. It permits an S7-200 system to be connected to Industrial
Ethernet (IE). This makes communication via Ethernet possible even in the lower
performance class of the S7 product family. Using STEP 7 Micro/WIN 32, an S7-
200 can be configured, programmed and diagnosed via Ethernet even at a geo-
graphical distance. Using a CP 243-1 IT, an S7-200 can communicate via Ethernet
with another S7-200, S7-300 or S7-400 controller. Communication with an OPC
server is also possible.
The IT functions of the CP 243-1 IT form the basis for monitoring and, if necessary,
also manipulating automation systems with a Web browser from a networked PC.
In addition, diagnostic messages can be e-mailed from a system. Using the IT
functions, it is very easy to exchange entire files with other computer and controller
systems.
Industrial Ethernet is the network for the process control level and the cell level of
the SIMATIC NET open communication system. Physically, Industrial Ethernet is
an electrical network based on shielded, coaxial lines, twisted pair cabling and an
optical network of fiber optic conductors. Industrial Ethernet is defined by the in-
ternational standard IEEE 802.3.
Continuous communication in the industrial area - worldwide
Industrial Ethernet is embedded in the SIMATIC NET concept which permits con-
tinuous networking of process control level, cell level and field level with
PROFIBUS and AS Interface. The IT functions, characterized by their worldwide
uniform standards and protocols, serve as the bridges between the world of indus-
trial controllers and the typical PCs used by the office world of today.
Compatibility
The CP 243-1 IT (6GK7 243-1GX00-0XE0) described here can be used for S7
communication. The CP 243-1 IT 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. 1.10 or higher
A maximum of 2 expansion modules can be installed on the CPU 222. In contrast,
up to 7 expansion modules can be connected to CPUs 224, 226 and 226XM.
The CP 243-1 IT is fully compatible with the CP 243-1. This means that user pro-
grams which were written for the CP 243-1 can also be run on a CP 243-1 IT.
CP 243-1 IT
J31069-D0429-U001-A0-7618
Introduction
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