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Fig. 53 - PROFIBUS DP cable lengths
7.7 PROFIBUS DP cable specifications
The cable should comply with the PROFIBUS DP cable specifications for RS-485.
Table 4 - PROFIBUS DP cable specifications
Parameter
Wires
Impedance
Capacity
Loop resistance
ComBricks User Manual v6.4.0 | January 18| © PROCENTEC
Value
2 (twisted)
150 Ohm (3 to 20 MHz)
≤ 30 pF/m
≤ 110 Ohm/km
Parameter
Wire diameter
Wire area
Shielding resistance
Value
≥ 0.64 mm
2
≥ 0.32 mm
≤ 9.5 Ohm/km
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