Control Word According To Fc Protocol - Danfoss VLT DMS 300 Manual

Example - Selection of a data value:
You wish to select kg/hour [20] in parameter 416
Process units. The value must be recalled after a
mains failure, so it is written in EEPROM.
PKE = E19F Hex - Write for parameter
416 Process units
IND = 0000 Hex
PWE = 0000 Hex
HIGH
PWE = 0014 Hex - Select data option
LOW
kg/hour [20]
The response from the slave to the master will be:
Example - Reading a parameter value:
The value in parameter 207 Ramp up time 1 is required.
The master sends the following request:
PKE = 10CF Hex - read parameter 207
Ramp up time 1
IND = 0000 Hex
PWE = 0000 Hex
HIGH
PWE = 0000 Hex
LOW
If the value in parameter 207 Ramp-up time 1 is 10
sec., the response from the slave to the master will be:
Conversion:
Under the section entitled Factory Settings the
various attributes of each parameter are displayed.
As a parameter value can only be transferred
as a whole number, a conversion factor must
be used to transfer decimals.
Example:
Parameter 201 Output frequency, low limit f
a conversion factor of 0.1. If you wish to preset the
154
minimum frequency to 10 Hz, the value 100 must
be transferred, as a conversion factor of 0.1 means
that the value transferred is multiplied by 0.1. The
value 100 will thus be perceived as 10.0.
Conversion table
Conversion
Process Words
The block of process words is divided into two blocks
of 16 bits, which always occur in the defined sequence.
Control telegram
(master slave)
Control telegram
(slave master)

Control Word according to FC protocol

To select FC protocol in the control word, parameter
512 Telegram Profile must be set to FC protocol [1].
The control word is used to send commands from a
master (e.g. a PC) to a slave (frequency converter).
has
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Decentral Solutions
index
73
2
1
0
-1
-2
-3
-4
-5
PCD 1
Control word
Status word
Conversion
factor
0.1
100
10
1
0.1
0.01
0.001
0.0001
0.00001
PCD 2
Reference-
value
Present outp.
frequency