VIPA System 200V IM Series, Руководство пользователя

Страница: 110 / 348

Chapter 3 Profibus DP
Manual VIPA System 200V
3-78 HB97E - IM - Rev. 06/29
Installation guidelines
•
The VIPA Profibus DP network must have a linear structure.
•
Profibus DP consists of minimum one segment with at least one master
and one slave.
•
A master is always used in conjunction with a CPU.
•
Profibus supports a max. of 126 participants.
•
A max. of 32 devices are permitted per segment.
•
The maximum length of a segment depends on the transfer rate :
9.6 ... 187.5kBaud
→
1000m
500kBaud
→
400m
1.5MBaud
→
200m
3 ... 12MBaud
→
100m
•
The network may have a maximum of 10 segments. Segments are
connected by means of repeaters. Every repeater is also seen as
participant on the network.
•
All devices communicate at the same baud rate, slaves adapt auto-
matically to the baud rate.
•
Only one fiber optic master may be used on one line.
•
Multiple masters may be deployed with a single CPU as long as they are
located on the same backplane bus (please take care not to exceed the
max. current consumption).
•
The maximum length of a FO link between two slaves may not exceed
300m with HCS-FO and 50m with POF-FO, independent from the baud
rate.
•
The number of bus participants depends on the baud rate:
≤
1.5MBaud
→
17 participants incl. master
3MBaud
→
15 participants incl. master
6MBaud
→
7 participants incl. master
12MBaud
→
4 participants incl. master
•
The bus does not require termination.
Note!
You should place covers on the unused sockets on any fiber optic device
(e.g. the jack for the following participant at the bus end) to prevent being
blinded by the light or to stop interference from external light sources. You
can use the supplied rubber stoppers for this purpose. Insert the rubber
stoppers into the unused openings on the FO interface.
•
The bus must be terminated at both ends.
•
Masters and slaves may be installed in any combination.
Profibus in
general
Fiber optic system
Electrical system