Siemens SIMATIC NET S7-300 User Manual

3 Operating the Ethernet CP with
A-77
S7-CPs for Industrial Ethernet Configuring and Commissioning
Release 01/2007
C79000-G8976-C182-07
“FTP” tab
In this dialog, you can create / modify a file allocation table.
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.
Ethernet CP as FTP server for S7 CPU data
To transfer data with FTP, create data blocks in 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 Ethernet CP as FTP server obtains the
information about how the data blocks used in the S7 station for file transfer are
mapped to files from a file allocation table (file file_db.txt).
You can create the file allocation table as follows and transfer it to the CP:
 By entering it in the “FTP” folder described here;
The file allocation table is then downloaded to the CP automatically along with
the project engineering data.
 By creating a file_db.txt file directly.
You must then download the file allocation table created in this way to the CP.
The file allocation table file_db.txt is stored in the file system of the Ethernet CP in
the /config folder.
“PROFINET” tab
Here, you specify the properties of the Ethernet CP for PROFINET IO and
PROFINET CBA.

Siemens SIMATIC NET S7-300 Specifications

General

Product Type Designation	SIMATIC NET S7-300
Mounting	DIN rail mounting
Protection Class	IP20
CPU Models	Various models available (e.g., CPU 312, CPU 314)
Communication Interfaces	MPI, PROFIBUS DP
Power Supply	24 V DC power supply required. Different power supply modules available.
I/O Modules	Digital input modules, digital output modules, analog input modules, analog output modules
Programming	STEP 7 software
Supply Voltage	24V DC or 120/230V AC (depending on model)
Digital Inputs	Available via digital input modules
Digital Outputs	Available via digital output modules
Analog Inputs	Available via analog input modules
Analog Outputs	Available via analog output modules
Communication Functions	MPI, PROFIBUS DP, Ethernet (depending on model)
Protocols	MPI, PROFIBUS DP, TCP/IP (depending on model)
Operating Temperature	0°C to 60°C
Storage Temperature	70 °C
Memory	Depends on CPU model (e.g., 32 KB to 1.5 MB)