Danfoss VLT Decentral FCD 300 Operating Instructions Manual page 75

3 Programming
Data types supported by frequency transformer:
3
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:
Output frequency high limit, f
Parameter 202
Hz. The value must be recalled after a mains failure, so it is written in
EEPROM.
PKE = E0CA Hex - Write for parameter 202
high limit, f
MAX
IND = 0000 Hex
PWE = 0000 Hex
HIGH
PWE = 03E8 Hex - Data value 1000, corresponding to 100
LOW
Hz, see conversion.
The response from the slave to the master will be:
Example - Selection of a data value:
You wish to select kg/hour [20] in parameter 416
must be recalled after a mains failure, so it is written in EEPROM.
PKE = E19F Hex - Write for parameter 416
IND = 0000 Hex
PWE = 0000 Hex
HIGH
PWE = 0014 Hex - Select data option kg/hour [20]
LOW
72
The response from the slave to the master will be:
Example - Reading a parameter value:
The value in parameter 207
The master sends the following request:
to be changed to 100
MAX
Output frequency
in parameter 207
to the master will be:
Conversion:
Under the section entitled
parameter are displayed. As a parameter value can only be transferred
as a whole number, a conversion factor must be used to transfer deci-
mals.
Example:
Parameter 201
of 0.1. If you wish to preset the minimum frequency to 10 Hz, the value
100 must be transferred, as a conversion factor of 0.1 means that the
Process units value transferred is multiplied by 0.1. The value 100 will thus be perceived
. The value
as 10.0.
Process units
MG.04.B8.02 - VLT is a registered Danfoss trademark
Ramp up time 1
is required.
PKE = 10CF Hex - read parameter 207
IND = 0000 Hex
PWE = 0000 Hex
HIGH
PWE = 0000 Hex
LOW
Ramp-up time 1 is 10 sec., the response from the slave
Factory Settings
the various attributes of each
Output frequency, low limit f
MIN
VLT® Decentral FCD
Ramp up time 1
If the value
has a conversion factor