6 Electrical connection
60
System bus connections of a multifunction panel 840
System bus between base unit, router module, and multifunction panel
To connect the base unit to a multifunction panel or a router module, a connection is established
via the RJ45 sockets (Bus Out – Bus In). For this purpose, use a commercially available net-
work cable (patch or crossover cable) that corresponds to at least category 5 and has S/FTP
shielding.
The connection can be established directly at a distance of up to 100 m. At greater distances,
an additional router module will be required at a maximum of 100 m away. The distance can
also be extended using a multifunction panel.
The following figure shows an example for the connection between a central processing unit,
multiple router modules, and a multifunction panel.
(4)
(5)
4
System bus In
5
System bus Out
NOTE!
Commercially available Ethernet switches must not be used for the system bus. A connection
between the system bus and a company network (LAN) is also not admissible.
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