X71: Field Bus Interface Profibus Dp; General Information; Pin Assignment - Bosch Rexroth VAM 10.2 Project Planning Manual

DOK-SUPPL*-VAM*XX.2***-PR03-EN-P
Rexroth IndraControl VAM 10.2/40.2 Machine Control Panels
8.4

X71: Field bus interface Profibus DP

8.4.1

General information

Field bus interface
8.4.2

Pin assignment

An ISO voltage of 5 V/100 mA is provided at the X71 plug at the connection
"VP". Neither bus terminating resistances nor a bus load may be present.
Thus, the connection of a hand-held terminal or of an Optical Link Plug (OLP)
[conversion RS485/Opto] is possible.
Optical Profibus networks in ring topology can be established using the OLP.
Type
Electrical isolation
Baud rate
2 BCD rotary switches
X71 plug
Tab. 8-3: Field bus interface Profibus DP acc. to EN 50170, part 2 (DP)
Fig. 8-8: Pins of the Profibus DP interface
Plug Pin RS485
reference
X71 1 –
2 –
3 B/B'
4
5 C/C'
6
7 –
8 A/A'
9
Tab. 8-4: Pin assignment of the Profibus DP interface
NOTICE
Ensure that potential equalizing currents do not cross the shield conductor of
the interface line. Therefore, provide a proper potential equalization between
the devices to be connected before the initial commissioning.
Bosch Rexroth AG
RS485
Yes
Up to 12 Mbaud
Station address 1-99
9-pin female connector strip D-SUB
5
9
6
1
Signal Significance
– –
– –
RxD/TxD-P Receiving/transmitting data
CNTR_P Repeater control signal
DGND Data reference potential (M 5 V)
VP Supply voltage plus (P 5 V)
– –
RxD/TxD-N Receiving/transmitting data N
DGND Data reference potential (M 5 V)
Malfunction of the Profibus DP interface due
to insufficient potential equalization
41/69
Interfaces