Danfoss VLT DMS 300 Manual page 153

The index character is used to indicate whether
it is a read or write command.
In a read command the index must have
the following format:
Some variable frequency drives have parameters
to which a text may be written. To be able to
write a text via the PWE block the parameter
command (AK) must be set to 'F' Hex.
For a write command the text must have
the following format:
Data types supported by frequency transformer:
Data types Description
3 Integer 16
4 Integer 32
5 Unsigned 8
6 Unsigned 16
7 Unsigned 32
9 Text string
Unsigned means that there is no operational
sign in the telegram.
Example - Write a parameter value:
Parameter 202 Output frequency high limit, f
changed to 100 Hz. The value must be recalled after
a electrical failure, so it is written in EEPROM.
PKE = E0CA Hex - Write for parameter 202
Output frequency high limit, f
IND = 0000 Hex
PWE = 0000 Hex
HIGH
PWE = 03E8 Hex - Data value 1000,
LOW
corresponding to 100 Hz, see conversion.
MG.90.F2.22 - VLT is a registered Danfoss trademark
to be
MAX
MAX
Decentral Solutions
The response from the slave to the master will be:
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