0111 Command cannot be performed
- and issues the following fault report in the parameter
value (PWE):
PWE low
(Hex)
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
11
Data change in the defined parameter is not
possible in the unit's present mode. Certain
parameters can only be changed when the motor
is turned off
82
There is no bus access to the defined parameter
83
Data change is not possible because the factory
set-up is selected.
7.3.8 Parameter Number (PNU)
Bits no. 0-11 transfer parameter numbers. The function of
the relevant parameter is defined in the parameter
description in the Programming Guide.
7.3.9 Index (IND)
The index is used together with the parameter number to
read/write-access parameters with an index, e.g.,
15-30 Alarm Log: Error Code
. The index consists of 2 bytes,
a low byte and a high byte.
Only the low byte is used as an index.
7.3.10 Parameter Value (PWE)
The parameter value block consists of 2 words (4 bytes),
and the value depends on the defined command (AK). The
master prompts for a parameter value when the PWE block
contains no value. To change a parameter value (write),
write the new value in the PWE block and send from the
master to the slave.
When a slave responds to a parameter request (read
command), the present parameter value in the PWE block
is transferred and returned to the master. If a parameter
contains not a numerical value but several data options,
e.g.,
where [0] corresponds to English, and
[4] corresponds to Danish, select the data value by
entering the value in the PWE block. See Example -
Selecting a data value. Serial communication is only
capable of reading parameters containing data type 9 (text
string).
15-40 FC Type
to
15-53 Power Card Serial Number
contain
data type 9.
For example, read the unit size and AC line voltage range
in
15-40 FC Type
. When a text string is transferred (read),
the length of the message is variable, and the texts are of
different lengths. The message length is defined in the
second byte of the message, LGE. When using text transfer
the index character indicates whether it is a read or a write
command.
To read a text via the PWE block, set the parameter
command (AK) to ’F’ Hex. The index character high-byte
must be “4”.
Some parameters contain text that can be written to via
the serial bus. To write a text via the PWE block, set the
parameter command (AK) to ’F’ Hex. The index characters
high-byte must be “5”.
PWE
high
PWE
low
Read text
Write text
130BA275.10
PKE
IND
Fx xx
04 00
Fx xx
05 00
7.3.11 Data Types Supported by VLT
AutomationDrive
Unsigned means that there is no operational sign in the
message.
Data types
Description
3
Integer 16
4
Integer 32
5
Unsigned 8
6
Unsigned 16
7
Unsigned 32
9
Text string
10
Byte string
13
Time difference
33
Reserved
35
Bit sequence
RS-485 Installation and set...
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7-5
7
7
