Siemens SIMATIC NET S7-300 User Manual

1 Communication via Ethernet CPs in S7 Stations
A-39
S7-CPs for Industrial Ethernet Configuring and Commissioning
Release 01/2007
C79000-G8976-C182-07
1.7.3 Network/Project Variant: Two or More Subnets - One Project
Configuration of the System
Due to the different tasks of the stations or due to the extent of the system it may
be necessary to operate more than one network.
View in a STEP 7 Project
System
“Production and
Management Level”
You can create the subnets in one STEP 7 project and configure the stations for
communication.
S7-400/1
S7-300/1 S7-300/2
S7-400/2
PROFIBUS CP
Ethernet CP
Ethernet (1)
PROFIBUS (1)
This representation illustrates the following:
 More than one subnet can be managed in one project.
 Each station is created once in the project.
 Each station can be assigned to more than one subnet by assigning its CPs to
different subnets.

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)