Command Code And Communication Data Description - Craftsman G10-0R7G-2SB Manual

CRC CHK Low number
CRC CHK High number
End of frame END
END Lo

8.6 Command code and communication data description

8.6.1 Command code: 03H (0000 0011), read N words (Word) (up to 16 words can
be read continuously)
For example, if the slave address is 01H, the memory start address is 0007 (the
maximum output frequency address). If one consecutive word is read, the structure of the
frame is described as followsÿ
RTU host command information
START
ADDR
CMD
Start address high
(parameter group
number)
Start address low
(parameter number)
High number of data
Low number of data
CRC CHK High number
CRC CHK Low number
Detected valueÿ CRCCheck valueÿ 16BITÿ
T1-T2-T3-T4ÿ 3.5 bytes of transmission timeÿ
T1-T2-T3-T4
01H
03H
00Hÿ F0 Groupÿ
07Hÿ F0.07ÿ
00H
01H
35H
CBH
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