Siemens SIMATIC S7-200 System Manual page 475

The (CP 243--1 IT) Internet module is a communications processor used for connecting the
S7-200 system to Industrial Ethernet (IE). The S7-200 can be remotely configured, programmed
and diagnosed via Ethernet using STEP 7 Micro/WIN. The S7-200 can communicate with another
S7--200, S7-300, or S7-400 controller via Ethernet. It can also communicate with an OPC server.
The IT functions of the (CP 243--1 IT) Internet module form the basis for monitoring and, if
necessary, also manipulating automation systems with a WEB browser from a networked PC.
Diagnostic messages can be e-mailed from a system. Using the IT functions, it is 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 cables and an optical network of fiber optic conductors.
Industrial Ethernet is defined by the International Standard IEEE 802.3.
S7-200 CPUs that Support Intelligent Modules
The (CP 243--1 IT) Internet module is an intelligent expansion module designed to work with the
S7-200 CPUs shown in Table A-63.
Table A-63 (CP 243- -1 IT) Internet Module Compatibility with S7-200 CPUs
CPU
CPU 222 Rel. 1.10 or greater
CPU 224 Rel. 1.10 or greater
CPU 224XP Rel. 2.00 or greater
CPU 226 Rel. 1.00 or greater
The (CP 243--1 IT) Internet module has the following features:
The (CPU 243--1 IT) Internet module is fully compatible with the (CP 243--1) Ethernet
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module. User programs written for the (CP 243--1) Ethernet module can also be run on the
(CP 243--1 IT) Internet module.
The (CP 243--1 1T) Internet module is delivered with a preset, unique worldwide MAC address
that cannot be changed.
Tip
Only one (CP 243--1 IT) Internet module should be connected per S7-200 CPU. If more than
one (CP 243--1 IT) Internet module is connected, the S7-200 CPU may not operate properly.
Functions
The (CP 243--1 IT) Internet module offers the following functions:
S7 Communication is based on TCP/IP
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IT communication
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Configuration
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Watchdog timer
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Ability of preset MAC addresses (48--bit value) to be addressed
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CPU 222 DC/DC/DC and CPU 222 AC/DC/Relay
CPU 224 DC/DC/DC and CPU 224 AC/DC/Relay
CPU 224XP DC/DC/DC and CPU 224XP AC/DC/Relay
CPU 226 DC/DC/DC and CPU 226 AC/DC/Relay
Technical Specifications
Description
Appendix A
461