Goodrive350-19 series VFD Communication protocols
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Read
command
VFD
address
CRC
Parameter
address
Data quantity
01
03
21 00
00 01
8E 36
Assume that the following response is returned:
Read
command
Number
of bytes
Data content
CRC
VFD
address
01
03
02
00 03
F8 45
The data content returned by the VFD is 0003H, which indicates that the VFD is in the stopped state.
Example 2: View information about the VFD whose address is 03H, including "Type of current fault"
(P07.27) to "Type of last but four fault" (P07.32) of which the parameter addresses are 071BH to
0720H (contiguous 6 parameter addresses starting from 071BH).
The command transmitted to the VFD is as follows:
VFD
address
Read
command
Start
address
6 parameters in total
CRC
03
03
07 1B
00 06
B5 59
Assume that the following response is returned:
VFD
address
Read
command
Number of
bytes
Type of
last fault
Type of
current fault
Type of last
but one fault
CRC
Type of last
but two fault
Type of last
but three fault
Type of last
but four fault
03 03 0C 00 23 00 23 00 23 00 23
00 23
00 23
5F D2
From the returned data, we can see that all the fault types are 0023H, that is, 35 in the decimal form,
which means the maladjustment fault (STo)
10.4.8.2 Write command 06H examples
Example 1: Set the VFD whose address is 03H to be forward running. Refer to the table of other
function parameters, the address of "Communication-based control command" is 2000H, and 0001H
indicates forward running, as shown in the following figure.
Function
Address
Data description
R/W
Communication-based
control command
2000H
0001H: Forward running
R/W
0002H: Reverse running
0003H: Forward jogging
0004H: Reverse jogging
