Siemens SIMATIC NET S7-300 User Manual

6 Programmed Communication Connections
A-160
S7-CPs for Industrial Ethernet Configuring and Commissioning
Release 01/2007
C79000-G8976-C182-07
6 Programmed Communication Connections
In some situations, it is an advantage to set up communication connections not
over the configuration interface of STEP 7 but program-controlled by a specific
application.
Typical users who will find this useful are, for example, mass producers of
machines who want to offer their customers a simple user interface but need to
adapt the communication services to the operator input. The end user should not
need knowledge of STEP 7.
As of STEP 7 V5.2 SP1, a function block is available for these applications that
allows flexible transfer of data blocks with configuration data to an Ethernet CP.
You will find further information in the following sources:
 For the properties of the configurable connection types, refer to Section 5.
 For the properties of the configurable connection types E-mail connection and
FTP connection, refer to /5/.
 After installing STEP 7 and the NCM S7 for Industrial Ethernet option, you will
find a programmed example in the ”Sample projects” tab of the
SIMATIC Manager. This example is described in the appendix.
 You will find information on the numbers of connections and amounts of data in
Section 4.1.
Notice
Please note the supported connection types of the used CP-Type /2/ .
V 5.2.1

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)