INVT CHF100A-004G-2, Operation Manual

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CHF100A series high performance universal inverter
.109.
same reason. The description below is data format in RTU mode.
Protocol data unit format of reading parameters:
Request format:
Protocol data unit Data length(bytes) Range
Command 1 0x03
Data Address 2 0~0xFFFF
Read number 2 0x0001~0x0010
Reply format (success):
Protocol data unit Data length(bytes) Range
Command 1 0x03
Returned byte number 2 2* Read number
Content 2* Read number
If the command is reading the type of inverter (data address 0x3016), the content value
in reply message is the device code:
The high 8 bit of device code is the type of the inverter, and the low 8 bit of device code
is the sub type of inverter.
For details, please refer to the following table:
High byte Meaning Low byte Meaning
01 Vector control type
02 For water supply
03 Middle frequency 1500Hz
00 CHV
04 Middle frequency 3000Hz
01 Vector control type
01 CHE
02 Middle frequency 1500Hz
01 Universal type
02 CHF
02 Vector type CHF100A
If the operation fails, the inverter will reply a message formed by failure command and
error code. The failure command is (Command
＋
0x80). The error code indicates the
reason of the error; see the table below.
Value Name Mean
01H
Illegal
command
The command from master can not be executed. The
reason maybe:
1 This command is only for new version and this version can
not realize.