The Profibus Network - YASKAWA XtraDrive Series User Manual

XtraDrive-DP User Manual
16

The PROFIBUS Network

PROFIBUS devices are connected in a bus structure. Up to
32 stations (master or slaves) can be connected in one segment,
and multiple buses may be connected if line amplifiers are used.
The bus has an active bus terminator at the beginning and end of
each segment. To ensure error-free operation, both bus
terminations must always be powered up.
RxD/TxD-P (3)
RxD/TxD-N (8)
When more than 32 stations are used, repeaters (line amplifiers)
must be used to connect the individual bus segments.
The maximum cable length depends on the transmission speed and
cable type (see Table 2). The specified cable length can be
increased by the use of repeaters. The use of more than three
repeaters in series is not recommended.
Station 1
DGND (5)
VP (6)
Shielding
Protective
Ground
Cabling
AUDIN - 7 bis rue de Tinqueux - 51100 Reims - France
Tel : 03.26.04.20.21 - Fax : 03.26.04.28.20
Web : http: www.audin.fr - Email : info@audin.fr
Station 2
(3) RxD/TxD-P
(5) DGND
(6) VP
(8) RxD/TxD-N
Protective
Ground
VP (6)
390 Ω
Data Line
RxD/TxD-P (3)
220 Ω
Data Line
RxD/TxD-N (8)
390 Ω
DGND (5)
Bus Termination