Data Types Supported By The Adjustable Frequency Drive; Conversion - Danfoss VLT HVAC Drive FC 102 Design Manual

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 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."
Figure 7.11 Read and Write Text
7 7
7.4.11 Data Types Supported by the
Adjustable Frequency Drive
Unsigned means that there is no operational sign in the
message.
Data types
3
4
5
6
7
9
10
13
33
35
Table 7.7 Supported Data Types
188
PKE IND PWE
high
Read text Fx xx 04 00
Write text Fx xx 05 00
Description
Integer 16
Integer 32
Unsigned 8
Unsigned 16
Unsigned 32
Text string
Byte string
Time difference
Reserved
Bit sequence
Danfoss A/S © Rev. 2014-01-13 All rights reserved.
Design Guide

7.4.12 Conversion

Parameter values are transferred as whole numbers only.
Conversion factors are used to transfer decimals.
4-12 Motor Speed Low Limit [Hz] has a conversion 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 multiplied by 0.1. The value 100 is thus
PWE
low
perceived as 10.0.
Examples:
0 s --> conversion index 0
0.00 s --> conversion index -2
0 ms --> conversion index -3
0.00 ms --> conversion index -5
Conversion index
100
75
74
67
6
5
4
3
2
1
0
-1
-2
-3
-4
-5
-6
-7
Table 7.8 Conversion Table
Conversion factor
1000000
100000
10000
1000
100
10
1
0.1
0.01
0.001
0.0001
0.00001
0.000001
0.0000001
MG16C122