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EXPERT Standard Series User Manual
217
Application Layer Protocol
Data Unit
Data Length(Bytes) Value or Range
Function Code 1 0x08
Sub Function Code 2 0x0000～0x0030
Data 2 0x0000～0xFFFF
If operation request fails, response should be error code and unexpected code.
Error code is 88H, and see the above description for any abnormal code.
Sub functions supported by wire diagnosis are listed as follows:
Sub
Function
Code
Data (Request)
Data
(Response)
Sub Function Significance
0x0001
0x0000 0x0000
Re-initialize communication: Make
no-response mode failure.
0xFF00 0xFF00
Re-initialize communication: Make
no-response mode failure.
0x0003
“New frame
end” and “00”
occupy high
and low bytes
respectively.
“New frame
end” and “00”
occupy high
and low bytes
respectively.
Set frame end of ASCII mode, and
this “new frame end” will replace the
old line feeds (Note: The new frame
end cannot be larger than 0x7F, and
cannot be equal to 0x3A).
0x0004 0x0000 No response
Set the no response mode, and the
slave only responds to “re-initialize
communication request” from here. It
is mainly used to isolate fault slave.
0x0030
0x0000 0x0000
Set slave “never respond” invalid
command and error command.
0x0001 0x0001 Set slave “respond” invalid command
and error command.
Modify multiple drive function codes and state parameters’ application layer
protocol data unit, as follows:
Request format is as follows: