Danfoss VLT AQUA Drive FC 200 Instruction Manual page 173

7 RS-485 Installation and Set-up
7.4.7 The PKE Field
The PKE field contains two sub-fields: Parameter command and response AK, and Parameter number PNU:
7
Bits no. 12-15 transfer parameter commands from master to slave and return processed slave responses to the master.
Parameter commands master ⇒ slave
Bit no.
15 14
0 0
0 0
0 0
0 0
1 1
1 1
1 1
Response slave ⇒master
Bit no.
15 14
0 0
0 0
0 0
0 1
1 1
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):
7-8
Parameter command
13 12
0 0 No command
0 1 Read parameter value
1 0 Write parameter value in RAM (word)
1 1 Write parameter value in RAM (double word)
0 1 Write parameter value in RAM and EEPROM (double word)
1 0 Write parameter value in RAM and EEPROM (word)
1 1 Read/write text
Response
13 12
0 0 No response
0 1 Parameter value transferred (word)
1 0 Parameter value transferred (double word)
1 1 Command cannot be performed
1 1 text transferred
MG.20.T1.22 - VLT
VLT AQUA Low Harmonic Drive Instruction
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