Danfoss VLT Series Design Manual page 144

7. RS-485 Installation and Set-up
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 character's high-byte must be
"5".
7.4.11. Data Types Supported by VLT HVAC
7
Data types
3
4
5
6
7
9
10
13
33
35
7.4.12. Conversion
The various attributes of each parameter are
displayed in the section entitled "Factory Set-
tings." Parameter values are transferred as
whole numbers only. Conversion factors are
therefore used to transfer decimals.
Par. 4-12
version factor of 0.1.
To preset the minimum frequency to 10 Hz,
transfer the value 100. A conversion factor of
0.1 means that the value transferred is multi-
plied by 0.1. The value 100 is thus perceived
as 10.0.
144
Description
Integer 16
Integer 32
Unsigned 8
Unsigned 16
Unsigned 32
Text string
Byte string
Time difference
Reserved
Bit sequence
Motor Speed, Low Limit
has a con-
MG.11.B4.22 - VLT
Unsigned means that there is no operational
sign in the telegram.
Conversion table
Conversion index Conversion factor
74
2
1
0
-1
-2
-3
-4
-5
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VLT ® HVAC Drive Design Guide
0.1
100
10
1
0.1
0.01
0.001
0.0001
0.00001