Connection of the bus wiring
The inbound bus wiring is connected to terminals 1A
and 1B of the Profibus connector. The continuing bus
wiring for the next device in line should be connected to
terminals 2A and 2B.
If there are no subsequent devices in the line then
the bus wiring must be terminated with a resistor (switch
to ON).
With the switch set to ON terminals 2A and 2B are
switched off for further continuing bus wiring.
Fig. Profibus connector with termination resistors.
Table: Segment lengths per Profibus specification.
UMG 96RM-P
Profibus
Profibus connector (external)
Termination resistors
Screw terminal
Other
Profibus-
Subscribers
D-sub
9-pole,
connector
D-sub
9-pole,
connector
Transfer speeds
in Kbit/s
Max.
segment length
9.6; 19.2; 45.45; 93.75 1200m
187.5 1000m
500 400m
1500 200m
3000; 6000; 12000 100m
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