Siemens SIMATIC NET CP 243-1 IT Technical Manual page 14

Introduction
Caution
Only one CP 243-1 or one CP 243-1 IT may be connected per S7-200 CPU. If ad-
ditional CP 243-1 or CP 243-1 IT processors are connected, the S7-200 system
may no longer function correctly.
The software of the CP 243-1 IT is compatible with the following standards.
• S7 XPUT/XGET and S7 READ/WRITE
• S7-200 I/O bus specification
• HTTP 1.0 in acc. w. RFC1945
• FTP in acc. w. RFC959
• SMTP in acc. w. RFC2821/2822 (only functions for sending e-mails)
Configuration
The CP 243-1 IT is configured with STEP 7 Micro/WIN 32 starting with version
3.2.3. The standard CP 243-1 IT is delivered with a fixed MAC address. IP ad-
dress and subnet mask must be configured or obtained from a BOOTP server.
Programming
Use the Internet wizard of STEP 7 Micro/WIN 32 to program communication in the
user program (see chapters 4 and 5).
Configuration
The firmware of the CP 243-1 IT is programmed on flash memory during produc-
tion and is stored there permanently. System states or dynamic variables which
occur during operation of the CP 243-1 IT are not stored permanently.
Configuration of the CP 243-1 IT is divided into Industrial Ethernet and IT services.
The Ethernet configuration is retentively stored in the DB of the S7-200 CPU. Dur-
ing startup, the CP 243-1 IT reads the configuration from the CPU and initializes it-
self accordingly.
The configuration of the IT services is stored in the file system of the CP 243-1 IT
in the form of one configuration each for user administration, FTP client and e-mail
service. These configuration files are continuously evaluated during running opera-
tion.
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CP 243-1 IT
J31069-D0429-U001-A0-7618