TECHTOP TD20 Series, Руководство по эксплуатации продукта

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TD20 Series VFD Communication Protocol
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beyond the range, the VFD will return fault response message as below:
VFD
address
CRC check Fault code
Abnormal
response code
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:
Read
command
VFD
address
CRC check
Parameters
address
Data number
If the response message is as below:
Read
command
Data
number
Data content
CRC check
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
Read
command
Start
address
6 parameters in total
CRC check
If the response message is as below:
VFD
address
Read
command
Byte
number
Type of
last fault
Type of
current fault
Type of last
but one fault
CRC check Type of last
but two fault Type of last
but three fault
Type of last
but four fault
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.