Installation / Preparation for Commissioning
TR-Electronic GmbH 2019, All Rights Reserved Printed in the Federal Republic of Germany
Page 18 of 154 TR - ECE - BA - GB - 0139 - 02 11/21/2019
Upon completion of installation, a visual inspection with report should be carried out. Whenever
possible, the quality of the network should be verified using a suitable bus analysis tool: no duplicate
IP addresses, no reflections, no frame repetitions, etc.
To ensure safe and fault-free operation, the
- PROFINET Design Guidelines, PNO order no.: 8.062
- PROFINET Installation Guidelines, PNO order no.: 8.072
- PROFINET Commissioning Guidelines, PNO order no.: 8.082
- PROFIsafe “Environmental Requirements”, PNO order no.: 2.232
- and the standards and PNO documents referenced therein
must be observed!
In particular the EMC directive in its valid version must be observed!
3.2 PROFINET IO transmission technology, cable specification
The safety-related PROFIsafe communication and the PROFINETcommunication are transmitted over
the shared network.
PROFINET supports linear, tree or star structures. The bus or linear structure used in the field buses
is thus also available for Ethernet. This is particularly useful in plant wiring, as a combination of linear
and branch lines is possible. The line topology is easily implemented as the measuring systems
already have an integrated switch.
Only use cables and connectors for which the manufacturer has issued a PROFINET manufacturer’s
declaration. The conduction type A/B/C, the mechanical and chemical properties, as well as the
configuration of the PROFINET cable, are to be defined according to the automation task. The cables
are designed for bit rates of up to 100 Mbit/s. Both cross-over and straight cables can be used as the
measuring system supports the “auto crossover function”. The transmission velocity is automatically
detected by the measuring system and does not have to be set by switches.
Bus addressing via switches as with PROFIBUS-DP is also not necessary as this is done
automatically by the addressing options of the PROFINET controller, however, the PROFIsafe
destination address “F_Dest_Add” must be set, see Page 20.
The cable length including the patch cable for copper cabling between two subscribers is designed for
a distance of up to max. 100 m. This transmission link is defined as a PROFINET end-to-end link.
Within an end-to-end link, the number of detachable connections is limited to six (male/female)
connector pairs. If more than six connector pairs are required, the maximum permissible connection
loss index (Channel Class-D values) must be maintained for the entire transmission link.
The IRT communication topology is configured in a connection table. Correct
connection of ports 1 and 2 must be ensured.
This is not the case for RT communication, which can be freely wired.
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