TECHTOP TD350 - Page 289

TD350 Series VFD Communication protocol
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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.
The command transmitted by the master is as follows:
Parameter
address
VFD
address
Write
command
CRC
Parameter
data
03 06 00 03 27 10 62 14
If the operation is successful, the following response is returned (same as the command transmitted
by the master):
Parameter
address
VFD
address
Write
command
CRC
Parameter
data
03 06 00 03 27 10 62 14
Note: In the preceding command description, spaces are added to a command just for explanatory
purposes. In practical applications, no space is required in the commands.
9.4.8.3 Continuously write command 10H examples
Example 1: Set the VFD whose address is 01H to be forward running at the frequency of 10 Hz. Refer
to the table of other function parameters, the address of "Communication-based control command" is
2000H, 0001H indicates forward running, and the address of "Communication-based value setting" is
2001H, as shown in the following figure. 10 Hz is 03E8H in the hexadecimal form.
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
0007H: Fault reset
0008H: Jogging to stop
Communication-based
value setting
2001H
Communication-based frequency setting (0–
Fmax, unit: 0.01 Hz)
R/W
2002H
PID setting, range (0–1000, 1000 corresponding
to 100.0%)
In the actual operation, set P00.01 to 2 and P00.06 to 8.
The command transmitted by the master is as follows: