Siemens CP 243-1 IT, Техническое руководство

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03/03 Configuration
CP 243-1 IT
J31069-D0429-U001-A0-7618
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For each FTP job, you must specify the FTP server to which the job is to be sent
and the name of the file which is to be processed by the job. For this, enter the IP
address of the FTP server and the name of the file including any required path in-
formation. Execution of an FTP job also requires the specification of a valid user
identifier for the FTP server including the related password.
Up to 32 FTP jobs can be configured.
As soon as you have configured the desired number of FTP jobs, click "Next" to
exit the FTP wizard.
Then either branch to another wizard or conclude the configuration of the CP 243-1
IT by clicking "Finish".
4.3.5 Conclusion of Configuration
During conclusion of the configuration of the CP 243-1 IT, the Internet wizard sets
up all required subprograms so that an S7-200 user program can access the CP
243-1 IT in the manner specified in the configuration. This means that the subpro-
gram required to activate a certain service is only set up if this service was actually
activated in the configuration.
4.4 Additional Ways to Configure a CP 243-1 IT
Some of the configuration data of the CP 243-1 IT are stored in the memory of the
S7-200 CPU while some are stored in the file system of the CP 243-1 IT.
The memory of the S7-200 CPU contains the Ethernet configuration and the basic
settings (e.g., activation or deactivation of individual IT services) made for an IT
configuration. While it is booting, the CP 243-1 IT reads this part of the configura-
tion from the memory of the S7-200 CPU and evaluates it.
The IT-specific configurations consisting of the configuration of the e-mail client,
the FTP client and the user administration are stored in the file system of the CP
243-1 IT in the directory /flash:/config in files ending with .edb, .fdb and .udb.
While booting, the CP 243-1 IT evaluates these configurations and then, during
running operation, monitors them continuously for changes.
Each one of these configuration files has a TIMESTAMP element containing a time
stamp which is cyclically read by the CP 243-1 IT. If the CP 243-1 IT determines
that a TIMESTAMP element has changed since it was read the last time, the appli-
cable file is completely read and the CP 243-1 IT reconfigures itself dynamically
with the configuration in this file. This means that a change in one of the three con-
figuration files only affects the CP 243-1 IT if the TIMESTAMP element also
changed.