TECHTOP TD350 - Page 288

TD350 Series VFD Communication protocol
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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
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
VFD
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
VFD
address
Write
command
Forward
running
03 06 20 00 00 01 42 28
Example 2: Set the "Max. output frequency" of the VFD whose address is 03H to 100 Hz.
Function
code
Name
Detailed parameter description
Default
value
Modify
P00.03
Max. output
frequency
Used to set the maximum output frequency of the
VFD. It is the basis of frequency setting and the
acceleration/deceleration.
Setting range: Max (P00.04, 10.00) –630.00Hz
60.00Hz
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