VLT
®
8000 AQUA
Programming
1.
Parameter bytes
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.
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
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 VLT AFD.
E.g. 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 number PNU)
Bits no. 0-10 are used for transmitting parameter
numbers. The function of a given parameter
is defined in 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 example on the following page.
MG.80.A7.22 - VLT is a registered Danfoss trademark
145
Rosewood STP ST42 General (Operation and Maintenance Manual - Part 4:
Section 6.3 Manufacturers Manuals 6.3.33 Danfoss VLT Aquadrive 8000) Vendor Manual
QP Id: VM207
Active: 03/09/2013
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