SYRUNS SY5000 series, Руководство пользователя

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User Manual of SY5000 series AC Drive MODBUS communication protocol
~100~
Communication protocol is 16-hex, the meaning of ASCII message character
:
Character ‘0’ ‘1’ ‘2’ ‘3’ ‘4’ ‘5’ ‘6’ ‘7’
ASCII code 30H 31H 32H 33H 34H 35H 36H 37H
Character ‘8’ ‘9’ ‘A’
‘B’ ‘C’ ‘D’ ‘E’ ‘F’
ASCII code 38H 39H 41H 42H 43H 44H 45H 46H
3
Communication data frame:
3.1 ASCII mode
：
STX Start character‘:’
（
3AH
）
Address Hi
Communication address
：
8-bit address consists of 2 ASCII codes
Address Lo
Function Hi
Function code
：
8-bit function code consists of 2 ASCII codes
Function Lo
Data(n-1)
Contents of data
：
n*8-bit data consists of 2n ASCII codes
n
≤
25, up to 50 ASCII codes
（
Note
：
now only support n
≤
12
）
……
Data 0
LRC CHK Hi
LRC check code
：
8 bit check code consists of 2 ASCII codes
LRC CHK Lo
END Hi
End characters
：
END Hi = CR(0DH), END Lo = LF(0AH)
END Lo
3.2 RTU mode
START Maintain the non-input signal
≥
10ms
Address Communication address
：
8-bit binary address
Function Function code
：
8-bit binary function code
DATA(n-1)
Contents of data
：
n*8bit data
，
n
≤
16
（
Note
：
now only support n
≤
6
）
……
DATA 0
CRC CHK Low
CRC check code
：
16-bit CRC check code consists of two 8-bit binary characters
CRC CHK High
END
Maintain the non-input signal
≥
10ms
3.3 Communication address
(
Address
):
00H
：
Broadcasting on all drives
（
Broadcast
）
01H~FEH
：
Sending to No. 01~254 inverters