Shenzhen Hpmont Technology Co., Ltd Appendix C Communication Protocol
HD30 Series Inverters User Manual －163－
Subfunction
code
Data (command) Data (response) Subfunction meanings
parameters)
0x0003
The function parameter
group no. occupies the
higher byte, and the
lower byte is “00”.
The max. value of intergroup
index.
To read the max value of
intergroup index.
0x0004
The function parameter
group no. occupies the
higher byte, and the
lower byte is “00”.
Next function parameter group
no. occupies the higher byte,
and the lower byte is “00”.
To read next function
parameter group no.
0x0005
The function parameter
group no. occupies the
higher byte, and the
lower byte is “00”.
Previous function parameter
group no. occupier the higher
byter, and the lower byte is
“00”.
To read previous function
parameter group no.
0x0006 0x3300
The status parameter index at
current displaying.
To read status parameter
index at current display.
0x0007 0x3300
The parameter index at next
status.
To display next status
parameter.
0x0008
The parameter group
no. and intergroup
index occupy the higher
and lower bytes
respectively.
Factory default.
To read factory default of
function parameter.
(Unsupported this
operation in status and
control parameters)
The function parameter characteristics are 2-byte, with definition shown as below:
Characteristics (Bit) Value Definition
Bit0
0B
To modify the upper limit as per character
restriction.
1B To modify the upper limit as per 4-byte restriction.
Bit2－Bit1
00B without decimal fraction
01B 1 decimal fraction
10B 2 decimal fraction
11B 3 decimal fraction
Bit5－Bit3
001B To display length 1
010B To display length 2
011B To display length 3
100B To display length 4
101B To display length 5
Reserved
Bit7－Bit6
00B Actual parameters, unchangeable
01B Changeable
10B Unchangeable in running status
11B
Set by the manufacturer. The users are not allowed
to make any modification.
Bit12－Bit8 00000B Without char
C
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