TECHTOP TD20 Series Product Manual page 112

TD20 Series VFD
beyond the range, the VFD will return fault response message as below:
VFD
address
Abnormal response code 86H means the abnormal response to writing command 06H; the fault code is
04H. In the table above, its name is operation failed and its meaning is that the parameter setting in
parameter writing is invalid. For example, the function input terminal cannot be set repeatedly.
7.3.8 Example of writing and reading
Refer to section 7.4.1 and 7.4.2 for the command format.
7.3.8.1 Example of reading command 03H
Read the state word 1 of the VFD with the address of 01H (refer to table 1). From the table 1, the
parameter address of the state word 1 of the VFD is 2100H.
The command sent to the VFD:
VFD
address
If the response message is as below:
VFD
address
The data content is 0003H. From the table 1, the VFD stops.
Watch "the current fault type" to "the previous 5 times fault type" of the VFD through commands, the
corresponding function code is P07.27–P07.32 and corresponding parameter address is 071BH–
0720H (there are 6 from 071BH).
The command sent to the VFD:
VFD
address
If the response message is as below:
VFD Read Byte
address command number
See from the returned data, all fault types are 0023H (decimal 35) with the meaning of maladjustment
(STo).
7.3.8.2 Example of writing command 06H
Make the VFD with the address of 03H to run forward. See table 1, the address of "communication
control command" is 2000H and forward running is 0001. See the table below.
Abnormal
response code
Parameters
Read
address
command
Data
Read
number
command
Read
Start
command
address
Type of Type of
last fault
current fault
Fault code
Data number
Data content
6 parameters in total
Type of last Type of last
but one fault but two fault
-110-
Communication Protocol
CRC check
CRC check
CRC check
CRC check
Type of last
Type of last
but three fault but four fault
CRC check