Siemens SIMATIC NET S7-300 User Manual

1 Communication via Ethernet CPs in S7 Stations
A-35
S7-CPs for Industrial Ethernet Configuring and Commissioning
Release 01/2007
C79000-G8976-C182-07
1.7 Networking Stations with STEP 7
Configuring
To allow stations to communicate with each other the networks must be configured
in the STEP 7 projects.
Configuring a network or subnet involves the following:
1. You create one or more subnets of the required subnet type in the project.
2. You select the properties of the subnet. Normally the default settings are
adequate.
3. You connect the station “logically” to the subnet.
4. You set up connections for communication.
Networking in a Multiproject
STEP 7 as of Version V5.2 supports configuration in a multiproject.
Using a multiproject, for example, you can create a project for distributed editing by
various editors and distribute the stations to the projects according to their editors.
To allow this, functions are available for branching and merging (sub) projects.
Interproject subnets and connections can be created.
Tools
The SIMATIC Manager provides convenient tools for configuring and documenting
networks (also graphically with NetPro).
The chapter describing network configuration in /6/ and the online help system also
contain information about configuring SIMATIC S7 networks.

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)