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Automation VT Drive FC322 Design Guide
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".
7.4.11 Data Types Supported by VLT Automation VT Drive
Data types
3
4
5
6
7
9
10
13
33
35
Unsigned means that there is no operational sign in the telegram.
7.4.12 Conversion
The various attributes of each parameter are displayed in the section
Factory Settings. Parameter values are transferred as whole numbers
only. Conversion factors are therefore used to transfer decimals.
par. 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 perceived as 10.0.
7.4.13 Process Words (PCD)
The block of process words is divided into two blocks of 16 bits, which always occur in the defined sequence.
MG.20.X1.22 - VLT
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7 RS-485 Installation and Set-up
Description
Integer 16
Integer 32
Unsigned 8
Unsigned 16
Unsigned 32
Text string
Byte string
Time difference
Reserved
Bit sequence
Conversion table
Conversion index
Conversion factor
74
0.1
2
100
1
10
0
1
-1
0.1
-2
0.01
-3
0.001
-4
0.0001
-5
0.00001
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