Chapter 1 Basics
Manual VIPA Accessories
1-8
HB37E - IM - RE_306-1UE00 - Rev. 15/22
•
Max. 125 DP slaves at one DP master - max. 32 slaves/segment.
•
You can only install or remove peripheral modules when you have
turned the power off!
•
The max. distance for RS485 cables between two stations is 1200m
(depending on the baud rate).
•
The maximum baud rate is 12Mbaud.
•
The PROFIBUS address of operational modules must never be
changed.
PROFIBUS DP provides an extensive set of diagnostic functions for fast
error localization. Diagnostic messages are transferred via the bus and
collected by the master.
DP-V0
provides the basic functionality of DP, including cycle data
exchange as well as station diagnostic, module diagnostic and channel-
specific diagnostic.
Data is transferred cyclically between the DP master and the DP slave by
means of transmit and receive buffers.
DP master
Input
Output
DP slave with I/O modules
I/O modules
Communication
Processor
receive buffer
PROFIBUS-DP
Bus
send buffer
AG bus cycle
DP cycle
PII
PIQ
PII: process image of the inputs
PIQ: process image of the outputs
Restrictions
Diagnostic
Function
cyclic data
communication
(DP-V0)