7.3.7
PROFIBUS DP (Optional)
Optionally, the VPP 21 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
Fig.7-8:
PROFIBUS DP interface
The bus line is specified as cable type A according to EN 50170, part 8-2 and
must comply with the cable parameters named in
.
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 Ohm/km
Outside diameter
> 0.03 in
Core cross-section
> 0,34 mm
2
Fig.7-9:
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.7-10:
Maximum segment length in relation to the transmission rate
7.3.8
CAN (Optional)
D-Sub female connector, 9-pin
Type:
CAN
Cable type:
Shielded, cross section min. 0.14 mm
2
44/65
Bosch Rexroth AG | Electric Drives
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Rexroth IndraControl VPP 21.2 | Project Planning Manual
VPP 21-Box
Field bus
Field bus