Configuring The Ftp Functions - Siemens CP 243-1 Operating Instructions Manual

Configuration
3.3 Configuring a CP 243-1 with STEP 7
3.3.4

Configuring the FTP functions

To change to the wizard for configuring the FTP functions, click its icon in the left-hand pane
of the dialog. All the information entered in the FTP wizard is stored in the file system of the
CP 243-1 in a file with the extension .fdb when you download to the S7-200 system.
Using the FTP wizard, you can configure the FTP requests to be sent by your S7-200 user
program via the FTP client on the CP 243-1.
The FTP server does not need to be configured. This server is automatically started by the
CP 243-1 during startup. Access rights to this FTP server are specified in the configuration of
the user administration.
Configuring the FTP requests
To configure an FTP request, you must first specify whether this is a read, write or delete
request and the FTP server to which the request will be sent.
With write requests, enter which data you want to send to the specified FTP server from the
memory of your S7-200 CPU. You do this by specifying the start address and the length of
the data to be transferred.
With read requests, specify where the received data will be stored in the memory of your S7-
200 CPU. Also specify how many bytes will be transmitted. If you enter a zero as the length,
the entire contents of the specified file are copied to the memory of your S7-200 CPU,
starting at the specified start address.
NOTICE
The CP 243-1 and the FTP wizard can only perform very limited plausibility checks on the
address and length information entered when the FTP requests are configured.
In particular with read requests, only a rudimentary check can be made as to whether
system or user data is overwritten in the memory of the S7-200 CPU based on the specified
address and length information. This is the responsibility of the user alone.
For each FTP request, you must specify the FTP server to which the request will be sent and
the name of the file to which the request applies. You do this by entering the IP address of
the FTP server and the name of the file including any required path information. Execution of
an FTP request also requires that you specify a valid user identifier for the FTP server
including the related password.
Up to 32 FTP requests can be configured.
As soon as you have configured the required number of FTP requests, click "Next" to exit the
FTP wizard.
Then either change to another wizard or complete the configuration of the CP 243-1 by
clicking "Finish".
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Operating Instructions, 03/2012, C79000-G8976-C244-02
CP 243-1