Examples - Danfoss VLT AQUA Operating Instructions Manual

7 RS-485 Installation and Set-up

7.5 Examples

7.5.1 Writing a Parameter Value
Change par. 4-14 Motor Speed High Limit [Hz] to 100 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] is a single word, and the
Note: Par. 4-14
parameter command for write in EEPROM is "E". Parameter number 4-14
is 19E in hexadecimal.
7
The response from the slave to the master will be:
7.5.2 Reading a Parameter Value
Read the value in par. 3-41
PKE = 1155 Hex - Read parameter value in par. 3-41
Time
IND = 0000 Hex
PWEHIGH = 0000 Hex
PWELOW = 0000 Hex
If the value in par. 3-41 Ramp 1 Ramp Up Time is 10 s, the response from
the slave to the master will be:
3E8 Hex corresponds to 1000 decimal. The conversion index for par. 3-41
par. 3-41 Ramp 1 Ramp Up Time is of the type Unsigned 32 .
158
Motor Speed High Limit
Ramp 1 Ramp Up Time
Ramp 1 Ramp Up
MG.20.T1.02 - VLT
VLT AQUA Low Harmonic Drive Operating In-
The telegram will look like this:
Ramp 1 Ramp Up Time is -2, i.e. 0.01.
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