Danfoss VLT Flow Drive FC 111 - 8.4.7 The PKE Field

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8.4.7 The PKE Field
The PKE field contains 2 subfields:
Parameter command and response (AK)
Parameter number (PNU)
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
e30bb918.10
PKE IND PWE
high
PWE
l ow
AK
PNU
P ar amet er
c ommands
and r eplies
P ar amet er number
Illustration 72: PKE Field
Bits 12–15 transfer parameter commands from master to follower and return processed follower responses to the master.
Table 53: Parameter Commands
Parameter commands master->follower
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 text.
Table 54: Response
Response follower->master
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.
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RS485 Installation and Set-up
VLT® Flow Drive FC 111
Design Guide