Danfoss VLT Flow Drive FC 111 Design Manual page 107

VLT® Flow Drive FC 111
Design Guide
8.4.7 The PKE Field
The PKE field contains 2 subfields:
• Parameter command and response (AK)
• Parameter number (PNU)
PKE
AK
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
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
15 14 13 12
0 0 0 0
0 0 0 1
0 0 1 0
0 0 1 1
1 1 0 1
1 1 1 0
1 1 1 1
Table 54: Response
Response follower->master
Bit number
15 14 13
0 0 0
0 0 0
0 0 1
0 1 1
1 1 1
Danfoss A/S © 2021.04
IND PWE PWE
high l ow
PNU
Parameter command
No command.
Read parameter value.
Write parameter value in RAM (word).
Write parameter value in RAM (double word).
Write parameter value in RAM and EEPROM (double word).
Write parameter value in RAM and EEPROM (word).
Read text.
Response
12
0 No response.
1 Parameter value transferred (word).
0 Parameter value transferred (double word).
1 Command cannot be performed.
1 Text transferred.
RS485 Installation and Set-up
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