VLT
®
8000 AQUA
Programming
The index character is used to indicate whether
the command in question is a read or write
command. For a read command, the index
must have the following format:
VLT 8000 AQUA has two parameters for which a text
can be written: parameters 533 and 534
Display text
,
see the description of these under the parameter
description. In order to write a text via the PWE block,
the parameter command (AK) must be set to
’
F
’
Hex.
For a write command, the index must have
the following format:
Data types supported by the frequency converter
Datatype
Description
3
Integer 16
4
Integer 32
5
Unsigned 8
6
Unsigned 16
7
Unsigned 32
9
Text string
Unsigned means there is no sign included
in the telegram.
Example - Write a parameter value:
Parameter 202
Output frequency high limit, f
MAX
is to
be changed to 100 Hz. This value must be remember
after a power failure, so it is written in EEPROM.
PKE =
E0CA Hex - Write to parameter 202
Output frequency high limit, f
MAX
IND =
0000 Hex
PWE
HIGH
=
0000 Hex
PWE
LOW
03E8 Hex - Data value 1000,
corresponding to 100 Hz, see
Conversion
.
The reply from the slave to the master will be:
Example - Choice of a data value:
kW [20] is to be selected in parameter 415
Process
units
. This value must be remembered after a power
failure, so it is written in EEPROM.
PKE =
E19F Hex - Write to parameter 415
Process units
IND =
0000 Hex
PWE
HIGH
=
0000 Hex
PWE
LOW
0014 Hex - Choose data choice
kW
[20]
Svaret fra slaven til masteren vil være:
Example - Read a parameter value:
The value in parameter 206
Ramp-up time
is required.
The master sends the following inquiry:
PKE =
10CE Hex - read parameter 206
Ramp-up time
IND =
0000 Hex
PWE
HIGH
=
0000 Hex
PWE
LOW
0000 Hex
If the parameter value in parameter 206
Ramp-up
time
is 10 seconds, the reply from the slave to
the master will be as follows:
MG.83.A2.02 - VLT is a registered Danfoss trademark
153
