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