Examples - Danfoss FC 300 Design Manual

11 RS-485 Installation and Set-up

11.5 Examples

11.5.1 Writing a Parameter Value
Change par. 4-14 Motor Speed High Limit [Hz]
Write the data in EEPROM.
PKE = E19E Hex - Write single word in par. 4-14
[Hz]
IND = 0000 Hex
PWEHIGH = 0000 Hex
PWELOW = 03E8 Hex - Data value 1000, corresponding to 100 Hz, see
Conversion.
Motor Speed High Limit [Hz]
Note: par. 4-14
parameter command for write in EEPROM is "E". Parameter number 4-14
is 19E in hexadecimal.
The response from the slave to the master will be:
11.5.2 Reading a Parameter Value
Read the value in par. 3-41
PKE = 1155 Hex - Read parameter value in par. 3-41
Time
11
IND = 0000 Hex
PWEHIGH = 0000 Hex
PWELOW = 0000 Hex
If the value in par. 3-41
the slave to the master will be:
NB!
3E8 Hex corresponds to 1000 decimal. The conversion index for par. 3-41
par. 3-41
238
to 100 Hz.
Motor Speed High Limit
is a single word, and the
Ramp 1 Ramp Up Time
Ramp 1 Ramp Up
Ramp 1 Ramp Up Time
is 10 s, the response from
Ramp 1 Ramp up Time
is of the type
MG.33.BC.02 - VLT
The telegram will look like this:
Ramp 1 Ramp Up Time
Unsigned 32
.
® is a registered Danfoss trademark
FC 300 Design Guide
is -2, i.e. 0.01.