CV3100 series and MINI series high performance general purpose inverter instruction manual
9-3
The following list may be more intuitive, but meaning unchanged:
STX
Keep no input signal is equal or more than
10 ms
Address
The communication address: 8-bit binary
address
Function
Function code: 8-bit binary address
DATA(n-1)
Data content:
N * 8-bit material, n < = 2 (two 16 bit data)
……
DATA 0
CRC CHK Low
CRC check code:
16-bit CRC check code by two 8-bit binary
combination
CRC CHK High
END
Keep no input signal is equal or more than
10 ms
The specific meaning of the format is as following:
Address
：
communication, 0 ~ 31 (decimal)
00H
：
Broadcast address. information frame sent by broadcast
address,slave machine will no response.
01H ~ 1FH
：
to a specific address drive.
Function
：
function code,also call command byte
，
there are 127 function
code in Modbus communication ,now we only use three of them,detail as
follow:
03H
：
Readout the content of register
06H
：
Write a date into register
10H
：
Write many data into register
DATA(n-1)
：
specific data, will have the application example as below.
RTU mode check code
（
CRC Check
），
detail introduction refer to the last
page
。