Parameter commands and responses (AK)
Bits no. 12-15 are used to transfer parameter com-
mands from master to slave and the slave's processed
responses back to the master.
Parameter commands masterslave
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
Response slavemaster
Bit no.
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
If the command cannot be performed the slave sends
this response: 0111
Command cannot be performed
and gives the following fault report in the parameter
value (PWE):
Response
(0111)
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's 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
17
Data change in the defined para-
meter is not possible in the frequency
converter's present mode.
Certain parameters can only be
changed when the motor is turned off
130
There is no bus access to the
defined parameter
131
Data change is not possible because
factory Setup is selected
Parameter number (PNU)
Bits no. 0-10 are used to transfer parameter numbers.
The relevant parameter's function is defined in the pa-
rameter description in the section entitled
Program-
ming
.
Index
Index is
used together with the parameter number to read/
write-access parameters that have an index, e.g. pa-
rameter 615
Error code
. The index is made up of 2
bytes, one lowbyte and one highbyte, but only the low-
byte is used as an index.
Example - Index:
The first error code (index [1]) in parameter 615
Error
code
must be read.
PKE = 1267 Hex (read parameter 615
Error code
.)
IND = 0001 Hex - Index no. 1.
The frequency converter will respond in the parameter
value block (PWE) with a fault code value from 1 - 99.
See
Summary of Warnings and Alarms
to identify the
fault code.
VLT
®
5000 Design Guide
86
MG.52.B2.02 - VLT
®
is a registered Danfoss trademark
