Siemens SIMATIC NET S7-300 User Manual

5 Configuring Communication Connections
A-134
S7-CPs for Industrial Ethernet Configuring and Commissioning
Release 01/2007
C79000-G8976-C182-07
Connection Name (Reference) - Only in Multiproject
If you create a connection to a partner in another project, that has not yet been
merged with the current multiproject, you must enter a connection name as
reference. Interproject connections can then be joined up based on this reference.
As soon as the connections have been brought together, the connection name
(reference) can no longer be entered.
5.6.2 Specifying TCP Addresses
Address Parameters and Connection Types
With TCP, the communication partners are addressed by the local and remote
endpoints as follows:
 Local addresses:
Local IP address and local port
 Remote addresses:
Remote IP address and remote port
TCP
connection
MAC
address A
Ethernet station BEthernet station A
IP
address B
remote
port
local
port
local
port
remote
port
Figure 5-15 Sending and Receiving on One TCP Connection
Depending on the required connection type, the remote address parameters are
either specified or left open during configuration.
 Specified TCP connection
You specified a destination station when you created the connection.
 Unspecified TCP connection
You entered “unspecified” for the connection partner when you created the
connection.

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)