User Documentation
Planning
2053260000/05/2015
85
When passive network components that comply with the PROFINET component
specication are used, this guarantees that the transmission link satises the
requirements for a proper data transmission function.
Passive
In terms of their mechanical and transmission structure, PROFINET components
are ideally designed for the requirements in industry and especially for
PROFINET. This is documented by the PROFINET Manufacturer's Declaration.
The PROFINET channel is the part of the transmission link that is
dened as the end-to-end link. The end-to-end link includes the
channel, as well as all connectors and the interfaces of the link.
The channel can consist of various transmission media, such as
copper or bre-optic cable.
The PROFINET component specication takes into account all connector
interfaces in the transmission link (PROFINET end-to-end link).
The component specication stipulates the following rules for establishing a
PROFINET cabling (PROFINET end-to-end link):
• Exclusively PROFINET network components are used.
• A maximum of six connector interfaces may be present in a transmission link.
This also includes the rst and last connector of the link.
• The length of the end-to-end link may not exceed 100 m.
If these rules are observed, it is guaranteed that the data
requirements for the PROFINET end-to-end link will be met. No acceptance
measurement of the end-to-end link or the PROFINET cabling is prescribed for
using the PROFINET component standard. However, this only applies if exclusively
PROFINET components were used for the installation.