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- KR Inverter ACD320 Series Manual.pdf
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ACD320 user manual
Appendix
The AC motor drive is expected to return a normal response after receiving command
messages from the master device. In the exception response, the most significant bit of the
original command code is set to "06" no matter the command code is "03"or"06", and the
data address is fixed to be 0x8001.
For example:
RTU Fault Response Message of the Slave
START
T1-T2-T3-T4 (transmission time of 3.5 bytes)
ADDR
01H
CMD
06H
higher bits of the fault
50H
response
lower bits of the fault
01H
response
higher bits of the fault code
00H
lower bits of the fault code
05H
CRC CHK lower bits
09H
CRC CHK higher bits
09H
END
T1-T2-T3-T4 (transmission time of 3.5 bytes)
ASCII Fault Response Message of the Slave
START
‘:’
‘0’
ADDR
‘1’
‘0’
CMD
‘6’
higher bits of the fault
‘5’
response
‘0’
lower bits of the fault
‘0’
response
‘1’
‘0’
higher bits of the fault code
‘0’
‘0’
lower bits of the fault code
‘5’
LRC CHK Hi
‘A’
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