INVT Goodrive350 IP55

Goodrive350 IP55 High-ingress Protection Series VFD Communication protocol
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9.4.8.1 Read command 03H examples
Example 1: Read state word 1 of the VFD whose address is 01H. From the table of other
function parameters, we can see that the parameter address of state 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 "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 2300 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)
9.4.8.2 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
0005H: Stop