System Manual – MOVIDRIVE® compact Drive Inverters
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Starting the inverter with PROFIBUS-DP (MC_41A)
Startup
Parameter set-
ting using
PROFIBUS-DP
With PROFIBUS-DP, the drive parameters are accessed via the MOVILINK
®
parameter
channel. This channel offers extra parameter services in addition to the conventional
READ and WRITE services.
Structure of the
parameter channel
To set the parameters of peripheral units via fieldbus systems that do not provide an
application layer, it is necessary to emulate the most important functions and services
such as READ and WRITE for reading and writing parameters. You will have to define
a parameter process data object (PPO) for PROFIBUS-DP. This PPO is transmitted
cyclically. In addition to the process data channel, it contains a parameter channel by
means of which acyclical parameter values can be exchanged (
→
Figure 146).
The following structure shows the parameter channel. In principle, the parameter chan-
nel is made up of a management byte, an index word, a reserved byte and four data
bytes.
01065BEN
Figure 146: Parameter process data object for PROFIBUS-DP
Byte 0
Byte 1
Byte 2
Byte 3
Byte 4
Byte 5
Byte 6
Byte 7
Management
Reserved
Index high
Index low
MSB data
Data
Data
LSB data
Parameter index
4-byte data
E
Q
Parameter channel
Parameter channel
Process data channel
Process data channel
0
0
I
Summary of Contents for MOVIDRIVE compact MCH41A
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