Siemens SIMATIC NET S7-300 User Manual

5 Configuring Communication Connections
A-141
S7-CPs for Industrial Ethernet Configuring and Commissioning
Release 01/2007
C79000-G8976-C182-07
Attributes Description Access
Local Endpoint
ID The entry is identical to the Local ID parameter in the
connection table.
Selectable
Name When you create the connection, a name is proposed here
along with a connection number as suffix.
With unspecified connections, use this box to identify the
partner.
Modifiable
Via CP If the station contains more than one CP of the same type
connected to the same subnet, you can select the connection
route -> “Route”, see Section 5.9.
If no CP is assigned (for example because the CP has been
deleted) “none” is displayed here.
Display only
Block Parameters
ID This value must be entered as a block call parameter ID for
calling the FC in the user program to identify the connection.
The ID changes if the local ID is changed.
Display only
LADDR This value must be entered as a block call parameter ID for
calling the FC in the user program to identify the connection.
Display only
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.

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)