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Manual – Fieldbus Interface INTERBUS UFI11A
Installation and Operation with a PC
As a rule, the fieldbus interface is connected to the INTERBUS system using a twisted,
shielded cable. The shield of the INTERBUS cable must be connected on both ends, for
example on the plug housing. Note the maximum supported transmission rate when you
are selecting the bus connector.
The cable is connected to the INTERBUS plug using pins 6 and 1 (/DO and DO) and
pins 7 and 2 (/DI and DI). Communication takes place via these contacts. The RS-485
signals /DO and DO as well as /DI and DI must have the same contacts on all INTER-
BUS stations. Otherwise, communication via the bus will not function.
05374AXX
Fig. 8: Pinout of the 9-pin sub D female connector X4 to EN 50170 ([1] = 9-pin sub D female
connector; [2] = Signal lines twisted pair; [3] = Conductive connection between the
connector housing and the shield; [4] = Jumper)
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