Operating instructions

MICRO PANEL XV-102 3.5" 5. Installation
M002869-02, 07/2009 31
5.3.8 Profibus
The Profibus interface is not electrically isolated.
Tab. 13 Pin assignment of the Profibus interface
Wiring #
##
# Shielded twisted pair cables, cable type A (in accordance with Profibus standard EN50170) must
be used.
Tab. 14 Cable specifications
Fig. 13 Profibus interface (9-pin, D-Sub, female, UNC)
Pin Signal Assignment
1- nc
2- nc
3 B EIA RS 485 line B
4 RTSAS Output for controlling a repeater
5 M5EXT Output of reference ground for external termination
6 P5EXT 5V output for external termination
7- nc
8 A EIA RS 485 line A
9- nc
!
Pin 6 (5 V) must not be used as a power supply for external devices.
1
23
45
6
7
89
Cable specifications
Rated surge impedance 150 Ω
Permissible surge impedance 135…165 Ω
Capacitance per unit length < 30 pF/m
Loop resistance < 110 Ω/km
Core cross-section ≥ 0.34 mm
2
(22 AWG)