Description
2.2 Setting up PROFINET
PROFINET with STEP 7
Function Manual, 05/2021, A5E03444486-AL
35
Overview of transmission media with PROFINET
The following table summarizes the technical specifications of a PROFINET interface with
integrated switch or an external switch, and possible transmission media.
Table 2- 6
Transmission media with PROFINET
Physical
properties
Connection
methods
Cable type / transmission
medium
standard
Transmission rate
/
mode
Max. segment
length
(be-
tween two
devices)
Advantages
Electrical
RJ45 con-
nector ISO
60603-7
100Base-TX
2x2 twisted, symmetrical
and shielded copper cable,
CAT 5 transmission re-
quirement
IEEE 802.3
100 Mbps, full
duplex
100 m
Simple and cheap cable
connection
Optical
SCRJ 45
ISO/IEC
61754-24
100Base-FX
POF fiber-optic cable (Pol-
ymer Optical Fiber, POF)
980/1000 µm (core diam-
eter / external diameter)
ISO/IEC 60793-2
100 Mbps, full
duplex
50 m
Use when there are
large differences in
potential
Insensitive towards
electromagnetic radia-
tion
Low line attenuation
Considerably longer
segments possible
1
Plastic-cladded glass fiber
(Polymer Cladded Fiber,
PCF)
200/230 µm (core diame-
ter / external diameter)
ISO/IEC 60793-2
100 Mbps, full
duplex
100 m
BFOC (Bayo-
net Fiber
Optic Con-
nector) and
SC (Subscrib-
er Connector)
ISO/IEC
60874
Monomode glass fiber
optic cable
10/125 µm (core diameter
/ external diameter)
ISO/IEC 60793-2
100 Mbps, full
duplex
26 km
Multimode glass fiber
optic cable
50/125 µm and
62.5/125 µm (core diame-
ter / external diameter)
ISO/IEC 9314-4
100 Mbps, full
duplex
3000 m
Electromag-
netic waves
-
IEEE 802.11 x
Depends on the
extension used (a,
g, h, etc.)
100 m
Greater mobility
Cost-effective network-
ing to remote, difficult
to access devices
1
Applies for fiber-optic cables only
See also
PROFINET interface (Page 1)
Assembly Instructions for SIMATIC NET Industrial Ethernet
http://support.automation.siemens.com/WW/view/en/27069465
PROFINET Installation Guideline (
http://www.profibus.com/nc/download/installation-
Summary of Contents for SIMATIC ET 200AL
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