Siemens SIMATIC NET S7-300 User Manual

5 Configuring Communication Connections
A-150
S7-CPs for Industrial Ethernet Configuring and Commissioning
Release 01/2007
C79000-G8976-C182-07
Notice
Within a multicast group, you should assign identical PORT addresses for the local
port and the partner port. This is the only way that frames can be sent and also
received by the CP within a multicast group!
Note the following example of three nodes in the multicast group:
UDP connection
Ethernet station A
IP multicast group: 224.0.1.0
PORT local 2001
PORT multicast group 2001
UDP connection
Ethernet station B
IP multicast group: 224.0.1.0
PORT local 2001
PORT multicast group 2001
UDP connection
Ethernet station C
IP multicast group: 224.0.1.0
PORT local 2001
PORT multicast group 2001
Multicast group with
 IP address 224.0.1.0
 PORT address 2001
Figure 5-23 Sending and Receiving in a Multicast Group using Identical PORT Addresses

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)