Wiring - WAGO I/O SYSTEM 750 750-833 Manual

Further Information
The PNO provides further documentation for its members on internet:
- Technical descriptions
- Guidelines
http://www.profibus.com/

4.1.2 Wiring

On the PROFIBUS with RS 485 transmission technology all devices are
connected in a line structure. The bus line comprises of a twisted and screened
pair of wires.
The field bus line is specified in EN 50 170 as a line type A and must provide
certain line parameters. The line type B also described in the EN 50 170 is an
old type and should no longer be used.
Parameter
Wave resistance
Operating capacity
Loop resistance
Wire diameter
Wire cross section
*)
Line type A allows maximum line lengths for a bus segment dependent upon
the transmission speed.
Transmission speed
WAGO-I/O-SYSTEM 750
Bus System
*)
*)
The wire cross sections used must conform with connection possibilities on the bus plug.
9.6 / 19.2 / 45.45 / 93.75
187.5
500
1500
3000 / 6000 / 12000
Field Bus Communication
Value
135 ... 165 Ω
< 30 pF/m
110 Ω/km
> 0.64 mm
2
> 0.34 mm
Max. bus segment length
kBaud
kBaud
kBaud
kBaud
kBaud
PROFIBUS
1200 m
1000 m
400 m
200 m
100 m
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