Service manual

www.enc.net.cn/en Tel/Fax:[phone] Appendix 3 Serial port RS485 communication protocol
172
(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.
data 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 data of area”,
“index area” and “run data 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 table 3.
Table 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
5 decelerating run over voltage 17 reserved
6
Constant speed run over
voltage
18 reserved
7
Controller power supply over
voltage
19 Under voltage
8 Inverter overload 20 System disturbance
9 Motor overload 21 Reserved
10 Inverter over heat 22 Reserved
11 reserved 23 E
2
PROM read and write error
12 reserved