73
1. Parameter Bytes
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Parameter commands and replies (AK)
Bits no. 12-15 are used for transferring parameter
commands from master to slave and the slave's
processed reply back to the master.
PNU
PKE
AK
Parameter
commands
and replies
Parameter
number
Not in use
IND
PWE
HIGH
PWE
LOW
If the command cannot be carried out, the slave will send this reply
(0111) Command cannot be executed and give the following error
message in the parameter value (PWE):
(reply 0111)
Error message
0
The parameter number used does
not exist
1
There is no write access to the
parameter called
2
The data value exceeds the
parameter limits
3
The used sub-index does not exist
4
The parameter is not of the array type
5
The data type does not match the
parameter called
17
Data change in the parameter called is
not possible in the present mode of the
drive. Some parameters can only be
changed when the motor has stopped
130
There is no bus access to the
parameter called
131
Data change is not possible because
factory setup has been selected
Parameter Commands Master
→
→
→
→
→
Slave:
Bit no.
15 14 13 12
Parameter command
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
Reply slave
→
→
→
→
→
master:
Bit no.
15 14 13 12
Reply
0
0
0
0
No reply
0
0
0
1
Parameter value transferred (word)
0
0
1
0
Parameter value transferred
(double word)
0
1
1
1
Command cannot be executed
1
1
1
1
Text transferred
Parameter Number (PNU)
Bits no. 0-10 are used for transmitting parameter numbers. The function
of a given parameter can be seen from the parameter description in the
programming section.
Index
Index is used together with the parameter number for read/write access
to parameters with an index, such as parameter 615, Error Code.
Index has 2 bytes - a lowbyte and a highbyte. However, only the
lowbyte is used. See the example on the following page.
PKE
IND
PWE
HIGH
PWE
LOW
