Installation / Preparation for Commissioning
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Printed in the Federal Republic of Germany
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TR - ECE - BA - DGB - 0105 - 03
08/31/2017
4 Installation / Preparation for Commissioning
Sercos supports linear or ring structures. In addition, hierarchical, synchronized and
real-time coupled network structures can be implemented. About the ring redundancy
a fail-safe communication in the case of a cable break or node failure through the use
of a ring topology is guaranteed.
The physical order of the devices is not relevant and the order of connection of the two
Sercos ports is not important. Additional active network devices, e.g. switches or hubs,
are not required. “HotPlugging” is not supported, therefore devices which have been
hot-plugged are not automatically integrated into the communication and real-time data
exchange during ongoing operation.
For transmission according to the 100Base-TX Fast Ethernet standard, both patch
cables and crossover cables in category S/STP CAT5e can be used (2 x 2 double
shielded twisted pair copper wire cables). The cables are designed for bit rates of up to
100 Mbit/s. The transmission speed is automatically detected by the measuring system
and does not have to be set by means of a switch.
The Sercos address can be adjusted alternatively by means of two HEX switches or
via the service channel by means of IDN / S-0-1040.
The assigned address does not correspond to the topology address, but is only an
alias for the topology address.
The cable length between two subscribers may be max. 100 m.
In order to ensure safe, fault-free operation, the
-
Sercos III “Planning and Installation Guide”
-
and the referenced Standards and Documents contained in it
must be observed!
In particular the EMC directive in its valid version must be observed!
