•
•
•
•
•
•
Conversion index
Conversion factor
-5
0.00001
8.4.13 Process Words (PCD)
The block of process words is divided into 2 blocks of 16 bits, which always occur in the defined sequence.
Table 58: Process Words (PCD)
PCD 1
PCD 2
Control telegram (master->follower control word)
Reference value
Control telegram (follower->master) status word
Present output frequency
8.5 Examples
8.5.1 Writing a Parameter Value
Change
parameter 4-14 Motor Speed High Limit [Hz]
to 100 Hz.
Write the data in EEPROM.
PKE = E19E hex - Write single word in
parameter 4-14 Motor Speed High Limit [Hz]
:
IND = 0000 hex.
PWE
HIGH
= 0000 hex.
PWE
LOW
= 03E8 hex.
Data value 1000, corresponding to 100 Hz, see
The telegram looks like the following illustration.
e3
0b
a0
92
.1
0
E19E
0000
0000
03E8
H
H
H
H
PKE
IND
PWE
PWEhigh
low
Illustration 73: Telegram
N O T I C E
Parameter 4-14 Motor Speed High Limit [Hz]
is a single word, and the parameter command for write in EEPROM is E.
Parameter 4-14
Motor Speed High Limit [Hz]
is 19E in hexadecimal.
The response from the follower to the master is shown in the following illustration.
e3
0b
a0
93
.1
0
119E
0000
0000
03E8
H
H
H
H
PKE
IND
PWE
PWEhigh
low
Illustration 74: Response from Master
8.5.2 Reading a Parameter Value
Read the value in
parameter 3-41 Ramp 1 Ramp Up Time
.
PKE = 1155 hex - Read parameter value in
parameter 3-41 Ramp 1 Ramp Up Time
:
IND = 0000 hex.
PWE
HIGH
= 0000 hex.
PWE
LOW
= 0000 hex.
AJ363928382091en-000101 / 130R0983
110 | Danfoss A/S © 2021.04
RS485 Installation and Set-up
VLT® Flow Drive FC 111
Design Guide