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Appendix A Serial port 485 communication protocol
47
13
Get ready
Don’t allow
Don’t allow
14
Get ready
Don’t allow
Don’t allow
20 Frame
error
Species 2>: command code=
“
11
”
~
“
15
”
, 5 kinds of function command which
mainframe send to auxiliary device, for detail please see protocol command list.
Table A-2 Response code meanings for command code “11~15”
Response
code
ASCII
Meaning of response code
description
00
Auxiliary device communication and
control is normal: function code password
is correct
20
(1) Frame checkout error;
(2) “command area” data overrun
;
(3) “index area” data overrun
(4) Frame length error/non ASCII byte
exist in area except frame head, frame end.
When this response code is
reported, date of “command
area”,“index area” and
“running data area” are not
reported.
30
(1) control to auxiliary device is
ineffective;
(2) ineffective function code parameter
modification;
(3) “setting/running data area” data
overrun;
(4) Password error
Whether report this response
code relate to current set
state of auxiliary device.
When report date of area,
“index area” and “run date
area” are reported according
to protocol requirement.
(4) Auxiliary index/command index/failure index
Data meanings: include auxiliary index byte and command index byte.
For mainframe, auxiliary index, command index are used for cooperating
mainframe command in realizing specific function.
For auxiliary device, auxiliary index, command index are used for reporting
failure state code, command index are reported without modification.
Data type: hex, 4 byte, ASCII format.
Command index occupy 2 low byte, data range: “00”~“FF”.
Auxiliary index occupy 2 high byte, data range: “00”~“FF”.
Auxiliary device failure state occupy“auxiliary index”byte,see Appendix table
3.
Table A-3 Failure type description
Failure
code
Description
Failure
code
Description
1
Accelerating run over current
13
Converting module protection
2
Decelerating run over current
14
External device failure
3
Constant speed run over current
15
Current detecting circuit failure
4
Accelerating run over voltage
16
RS485 communication failure
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