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S7-1500 CP as FTP server
The functionality described here allows you to transfer data in the form of files to or from an
S7-1500 station using FTP commands. At the same time, the conventional FTP commands
for reading, writing and managing files can also be used.
Access to the following data of the S7-1500 is possible:
● RAM of the CP
Name of the directory:
/ram
● Data blocks of the CPU
Name of the directory:
/cpu1 / DBx
"DBx" is the name of the relevant data block e.g. DB10.
● SIMATIC memory card of the CPU
The function is supported as of the following firmware versions:
– CPU: V2.0
– CP 1543-1: V2.0
– CP 1545-1: V1.0
Name of the directory:
/mmc_cpu1
Access to the following folders of the SIMATIC memory card is possible:
– /DATALOGS
– /RECIPES
Note
FTP access to the SIMATIC memory card of the CPU: CPU STOP possible
Note that the cards have a limited capacity. If the memory space of the SIMATIC memory
card is completely occupied due to storage of large amounts of data, the CPU changes to
STOP.
• Use a card with adequate storage capacity.
• Avoid writing large amounts of data often to the SIMATIC memory card using FTP.
Reading/writing via DBs of the CPU
To transfer data with FTP via data blocks, create the required DBs in the CPU. Due to their
special structure, these are known as file DBs.
When it receives an FTP command, the CP acting as FTP server queries its assignment
table to find out how the data blocks used for file transfer in the CPU will be mapped to files.
CP 1543-1
Operating Instructions, 12/2019, C79000-G8976-C289-08
Directory for log files
Directory for recipe files
Configuration, programming
4.7 FTP communication
43
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