Siemens S7-300 Devices capable of Profinet PN communication, Properties of Profinet interface

Communication

3.1 Interfaces

Devices capable of PROFINET (PN) communication

•PROFINET IO components (for example, interface module IM 151-3 PN in an ET 200S)

•S7-300 / S7-400 with PROFINET interface (for example, CPU 317-2 PN/DP or CP 343-1 PN)

•Active network components (a switch, for example)

•PG/PC with network card

Properties of PROFINET interface X2

Properties

IEEE standard	802.3
Connector design	RJ45
Transmission speed	Max. 100 Mbps
Media	Twisted Pair Cat5 (100BASE-TX)

Note

Networking PROFINET components

The use of switches, rather than hubs, for networking PROFINET components brings about a substantial improvement in decoupling bus traffic, and improves runtime performance under higher bus load. PROFINET CBA with cyclic PROFINET interconnections requires the use of switches in order to maintain compliance with performance specifications. Full duplex mode at 100 Mbps is mandatory for cyclic PROFINET interconnections.

PROFINET IO also requires the use of switches and 100 Mbps full duplex mode.

Reference

•For information on how to configure the integrated PROFINET interface of the CPU, refer to the S7-300, CPU 31xC and CPU 31x Installation operating manual.

•For details on PROFINET, refer to the PROFINET System Description

•For detailed information on Ethernet networks, network configuration and network components refer to the SIMATIC NET Manual: Twisted Pair and Fiber Optic Networks, available under article ID 8763736 on the Internet URL http://www.siemens.com/automation/service&support

•Tutorial: Commissioning Component-Based Automation Systems, article ID 14142554

•Further information on PROFINET: http://www.profibus.com

See also

PROFINET IO System (Page 3-19)

3-4	CPU 31xC and CPU 31x, Technical data
	Manual, Edition 08/2004, A5E00105475-05