7-14
Connections and Interfaces
IndraControl L40
DOK-CONTRL-IC*L40*****-PR03-EN-P
PROFIBUS DP (Optional)
Optionally, the IndraControl
L40 provides a PROFIBUS interface
according to DIN EN 50170, Part 2.
D-Sub female connector, 9-pin
Type:
RS485
Cable type:
Shielded, twisted pair
Transmission rate:
10 or 100 Mbits/s
X7P
Shield applied to the metal housing
of the plug-in connector
5
1
9
6
3
4
5
6
7
8
9
2
1
VP 100 mA
DGND
CNTR-T
RxD/TxD-P
CNTR-N
RxD/TxD-N
DP_Bus.FH9
The bus line is specified as cable type A according to EN 50 170, part 8-2
and must comply with the cable parameters named in Fig. 7-21. You will
find the corresponding cables and connectors on page 11-6.
Surge impedance at a frequency
within a range from 3 to 20 MHz
135 to 156 ohms
Operating capacity
≤
30 pF/m
Loop resistance
≤
110 ohms/km
Outside diameter
> 0.64 mm
Core cross-section
> 0.34 mm
²
Fig. 7-21:
Parameters for PROFIBUS DP line
The above mentioned cable parameters of a standard cable of cable type
A result in the following length extensions of a bus segment for the
particular transmission rates:
Transmission rate in kbits/s
9,6
19,2
45,45
93,75
187,5
500
1500
3000
6000
12000
Max. segment length in m
1200
1200
1200
1200
1000
400
200
100
100
100
Fig. 7-22:
Maximum segment length in relation to the transmission rate
X7P
PROFIBUS DP Interface
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