![background image](http://html.mh-extra.com/html/sick/flexi-soft/flexi-soft_operating-instructions-manual_1264304118.webp)
Chapter
6
Operating Instructions
Flexi Soft Gateways
118
© SICK AG • Industrial Safety Systems • Germany • All rights reserved
8012664/XB29/2013-06-11
Subject to change without notice
Fieldbus gateways
Plug assignment
The connection to the PROFIBUS DP fieldbus is made using a 9 pin D
R
Sub socket.
Pin
Description
1
NC
2
NC
3
RxD/TxD-P
4
CNTR-P
5
GND-EXT
6
+5V-EXT
7
NC
8
RxD/TxD-N
9
CNTR-N (GND-EXT)
SHLD Shield
Bus cable
The bus topology for PROFIBUS DP is a linear structure comprising a screened, twisted
2 core cable with active bus termination at both ends. The possible bus lengths are 100 m
at 12 Mbit/s up to 1,200 m at 94 kbit/s.
Position
Description
1
PROFIBUS user grey
2
Shielded bus cable
3
PROFIBUS termination yellow (with integrated terminating resistors)
Cable parameters
The properties of the bus cable are specified in EN 50 170 as cable type A.
Property
Value
Characteristic impedance
135-165
`
(at a frequency of 3-20 MHz)
Capacitance per unit length
< 30 pF/m
Loop resistance
a
110
`
/km
Core diameter
> 0.64 mm
Core cross-section
> 0.34 mm
2
Fig. 58: D-Sub socket and
plug pin assignments
FX0
>
GPRO
Fig. 59: Bus cable FX0-GPRO
Tab. 85: Explanation bus
cable FX0-GPRO
Tab. 86: Cable parameters
FX0
>
GPRO
Pin 1
Pin 2
Pin 3
Pin 4
Pin 5
Pin 9
Pin 8
Pin 7
Pin 6
SHLD