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System Manual – MOVIDRIVE® compact Drive Inverters
10
Starting the inverter with PROFIBUS-DP (MC_41A)
Startup
DP Configuration
"Universal-
Configuration"
Selecting the 'Universal configuration' DP configuration gives you two DP identifiers
defined as 'blank spaces' (often also referred to as DP modules) with the entry 0
dec
. You
can then configure these identifiers individually observing the following peripheral
conditions:
Module 0 (DP identifier 0) defines the parameter channel of the inverter:
Module 1 (DP identifier 1) defines the process data channel of the inverter:
The following figure shows the structure of the configuration data defined in IEC 61158.
These configuration data are transmitted to the inverter during the initial start of the DP
master.
Data consistency
Consistent data is data that has to be transmitted between the programmable controller
and the drive inverter as one block at all times and must never be transmitted separately.
Data consistency is especially important for transmitting position values or complete
positioning tasks. This is because data that is not transmitted consistently could be from
different program cycles of the programmable controller, which would lead to undefined
values being transmitted to the drive inverter.
Length
Function
0
Parameter channel deactivated
8 bytes or 4 words
Parameter channel is used
Length
Function
2 bytes or 1 word
1 process data word
4 bytes or 2 words
2 process data words
6 bytes or 3 words
3 process data words
12 bytes or 6 words
6 process data words
20 bytes or 10 words
10 process data words
00087BEN
Figure 144: Format of the identifier byte Cfg_Data to IEC 61158
7
6
5
4
3
2
1
0
MSB
LSB
Data length
0000 = 1 byte/word
1111 = 16 byte/word
Input/output
00 = special identifier formats
01 = input
10 = output
11 = input/output
Format
0 = byte structure
1 = word structure
Consistency over
0 byte or word
1 complete length
NOTE
Observe for MCF/MCV/MCS41A (does not apply to MCH41A):
The 'special identifier formats' coding is not supported. Only use the setting “Integrity
over entire length” for data transmission!
0
0
I
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