DRV-28 inverter
s Communication protocol
-274-
Inverter
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)
9.4.8.2 Write command 06H examples
Example 1: Set the inverter 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
0006H: Coast to stop (emergency stop)
0007H: Fault reset
0008H: Jogging to stop
The command transmitted by the master is as follows:
Parameter
address
CRC
Inverter
address
Write
command
Forward
running
03
06
20 00
00 01
42 28
If the operation is successful, the following response is returned (same as the command transmitted
by the master):
Parameter
address
CRC
Inverter
address
Write
command
Forward
running
03
06
20 00
00 01
42 28
Example 2: Set the "Max. output frequency" of the inverter whose address is 03H to 100 Hz.
Function
code
Name
Detailed parameter description
Default
value
Modi
fy
P00.03
Max. output
frequency
Used to set the maximum output frequency of the
inverter. It is the basis of frequency setup and the
acceleration/deceleration.
Setting range: Max (P00.04, 10.00) –630.00Hz
50.00Hz
◎
From the number of decimals, we can see that the fieldbus scale of the "Max. output frequency"
(P00.03) is 100. Multiply 100 Hz by 100. The value 10000 is obtained, and it is 2710H in the
hexadecimal form.
