Function Ground; Profibus Interface - Pepperl+Fuchs VBG-PB-K25 Manual

5.1.1.1

Function Ground

• The function ground can be connected either at the ground screw or at the
terminal.
• The function ground should be connected with a cable as short as possible to
guarantee a good EMC property.
• Therefore is to prefer to connect the ground via the ground screw.
5.2

PROFIBUS Interface

The PROFIBUS interface is realized as a 9-pin SUB-D connector, in accordance
to the standard for PROFIBUS DIN 19245. It is placed at the top left-hand corner
of the master
9
8
7
6
P R O F IB U S
The AS-i/PROFIBUS gateway sends and receives on pins 3 and 8 of the SUB-D
socket. The PROFIBUS signal "RxD/TxD-N (data line A)
signal "RxD/TxD-P (data line B)
The pins 5 (0 V) and 6 (5 V) supply 5 V DC for the bus termination.
1. If you measure the DC voltage between RxD/TxD-P (data line B) and RxD/TxD-N (data line A), RxD/TxD-P (data line B) is the positive pole
when the bus is silent.
Subject to reasonable modifications due to technical advances.
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Connections, Displays and Operating Keys
Function ground
5
4
3
2
1
1
" is located on pin 3.
D G N D (0 V o lt)
R x D /T x D -N
(d a ta lin e A )
R x D /T x D -P
(d a ta lin e B )
V P / + 5 V o lt)
1
AS-Interface
" is located on pin 8, the
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