Goodrive350A series high-performance multifunction VFD
Communication
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9.4.8.1 Examples of read command 03H
Example 1: Read status word 1 of the VFD whose address is 01H. According to the table of other
function addresses, the parameter address of status word 1 of the VFD is 2100H.
The read command transmitted to the VFD is as follows:
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 "Present fault type"
(P07.27) to "5th-last fault type" (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
Last fault
type
Present
fault type
2nd-last fault
type
CRC
3rd-last fault
type
4th-last fault
type
5th-last fault
type
03 03 0C 00 23 00 23 00 23 00 23
00 23
00 23
5F D2
According to the returned data, all the fault types are 0023H, that is, 35 in the decimal form, which
means the maladjustment fault (STo)
9.4.8.2 Examples of write command 06H
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.
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