Communication
3.1 Interfaces
CPU 31xC and CPU 31x, Technical Data
3-4 Manual, 01/2006 Edition, A5E00105475-06
Properties of the PROFINET interface
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 instructions on how to configure the integrated PROFINET interface, refer to
S7-300,
CPU 31xC and CPU 31x operating instructions (Setup)
.
• For further information on PROFINET, refer to
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 at http://support.automation.siemens.com.
•
Component Based Automation, Commissioning SIMATIC iMap Systems - Tutorial,
Article ID 18403908
• Further information about PROFINET: http://www.profinet.com
See also
PROFINET IO System (Page 3-19)
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