2. Reading from sub-index
Contents
After parameter number, data set and parameter value have been written per SDO
Write, the corresponding sub-index is read back with SDO Read.
In the reply in the reading of sub-index, the frequency inverter states whether the
writing process was successful (ACK) or whether an error occurred (NAK). If an error
occurred, a corresponding error code is reported.
Access to a parameter figure is done by stating the parameter number and the data
set.
Example: Parameter number = 370, data set = 3
8.6.2
Note:
06/05
06/05
Byte
0
Parameter number +
data set x 1000
SEL
=
2
ENQ
=
5
ACK
=
6
NAK
=
15
Byte 0/1 = 370 + 3*1000
Byte 0/1 = 3370
Error code list
Read/Write
Error code
1
Inadmissible parameter value
2
Inadmissible data set
3
Parameter not readable
4
Parameter not write-capable
5
Reading error, EEPROM
6
Writing error, EEPROM
7
Check sum error EEPROM
8
Parameter cannot be changed while
the drive mechanism is running
9
Values of the data sets differ
10
Parameter has the wrong type
11
Unknown parameter
15
Unknown error
If the ID ENQ or SEL is not stated in SDO Write, the report is done with
NAK and error code = 0.
Subindex (Read)
1
2
3
ACK
00
NAK
00
Meaning
4
5
6
Parameter figure
Error code
undefined
n
27
27
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