# Cable

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The table below shows the recommended specification for cables.

Table - Profibus Cable Specification

Measure | Range
Impedance | 135 … 165 Ω
Capacitance | < 30 pF / m
Resistance | < 110 Ω / km
Wire Diameter | > 0,64 mm
Conductor cross section | > 0,34 mm²

Dependency between the maximum cable length an the baud-rate is given in the following table.

Table - Baud Rate & Max Cable Length

Baud rate [kbit/s] | Max. cable length [m]
9.6 | 1200
19.2
31.25
45.45
93.75
187.5 | 1000
500 | 400
1500 | 200
3000 | 100
6000
12000