Danfoss VLT AutomationDrive FC 361, Руководство по конструкции

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11.5.7 PKE Field
The PKE field contains 2 sub-fields:
•
Parameter command and response AK.
•
Parameter number PNU.
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
130BA268.11
PKE IND
PWE
high
PWE
low
AK PNU
Par
amet
er
commands and r
eplies
Par
amet
er
number
Illustration 11.10 PKE Field
Bits number 12–15 transfer parameter commands from
master-to-slave and return processed slave responses to
the master.
Bit number Parameter command
15 14 13 12
0 0 0 0 No command.
0 0 0 1 Read parameter value.
0 0 1 0 Write parameter value in RAM (word).
0 0 1 1 Write parameter value in RAM (double
word).
1 1 0 1 Write parameter value in RAM and
EEPROM (double word).
1 1 1 0 Write parameter value in RAM and
EEPROM (word).
1 1 1 1 Read/write text.
Table 11.4 Parameter Commands Master
⇒
Slave
Bit number Response
15 14 13 12
0 0 0 0 No response.
0 0 0 1 Parameter value transferred (word).
0 0 1 0 Parameter value transferred (double
word).
0 1 1 1 Command cannot be performed.
1 1 1 1 Text transferred.
Table 11.5 Response Slave
⇒
Master
If the command cannot be performed, the slave sends this
response:
0111 Command cannot be performed
- and issues the following fault report in the parameter
value (PWE):
PWE low
(hex) Fault report
0 The parameter number used does not exist.
1 There is no write access to the defined parameter.
2 Data value exceeds the parameter limits.
3 The sub-index used does not exist.
4 The parameter is not the array type.
5 The data type does not match the defined
parameter.
11 Data change in the defined parameter is not
possible in the present mode of the drive. Certain
parameters can only be changed when the motor
is turned off.
82 There is no bus access to the defined parameter.
83 Data change is not possible because factory set-up
is selected.
Table 11.6 Fault Report
11.5.8 Parameter Number (PNU)
Bits number 0–11 transfer parameter numbers. The
function of the relevant parameter is defined in the
parameter description in the
programming guide .
11.5.9 Index (IND)
The index is used together with the parameter number to
read/write-access parameters with an index, for example,
parameter 15-30 Alarm Log: Error Code . The index consists
of a low byte and a high byte.
Only the low byte is used as an index.
11.5.10 Parameter Value (PWE)
The parameter value block consists of 2 words (4 bytes),
and the value depends on the defined command (AK). The
master prompts for a parameter value when the PWE block
contains no value. To change a parameter value (write),
write the new value in the PWE block and send from the
master to the slave.
When a slave responds to a parameter request (read
command), the present parameter value in the PWE block
is transferred and returned to the master. If a parameter
contains not a numerical value but several data options,
for example,
parameter 0-01 Language [0] English , and [4]
Danish , select the data value by entering the value in the
Appendix Design Guide
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