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8017171/115Z/V3-0/2019-01/ SICK OPERATING INSTRUCTIONS | VISIC100SF
Subject to change without notice
INSTALLATION
Cable properties for using the RS-485 interface
SICK recommends using shielded cable type A with following properties:
Table 17: Cable properties for the RS-485 interface
Surge impedance R
w
135...165 Ohm
Capacitance per unit length C' < 30 pF/m
Loop resistance R' 110 Ohm/km
Wire diameter d 0.64 mm
Wire cross-section q > 0.34 mm²
Shielded cable type A is a twisted two-wire cable.
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