Advanced Cp As Ftp Server For The S7 Cpu Data; Procedure - Siemens S7-300 Configuration Manual

File management and file access with FTP/FTPS

9.3 Advanced CP as FTP server for the S7 CPU data

Note
Automatic connection termination
If the FTP connection to the FTP server of the Advanced CP is not used, the Advanced CP
closes down the FTP connection automatically after some time.
See also
Security when accessing process data (Page 162)
9.3 Advanced CP as FTP server for the S7 CPU data
9.3.1

Procedure

The functionality described here allows you to transfer data in the form of files to data blocks
or from data blocks of an S7 station using FTP commands. At the same time, the
conventional FTP commands for reading, writing and managing files can also be used.
To transfer data with FTP, create data blocks on the CPU of your S7 station; due to their
special structure, these are known here as file DBs.
When it receives an FTP command, the Advanced CP acting as FTP server queries a file
allocation table (file_db.txt) to find out how the data blocks used for file transfer in the S7
station will be mapped to files.
With the information in the file allocation table, it is possible to address data blocks in one or
more CPUs (up to 4) in an S7 station.
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Configuring and commissioning S7 CPs for Industrial Ethernet
Configuration Manual, 09/2013, C79000-G8976-C182-13