Salicru CV50-008-4F User Manual page 113

The RTU request command is:
High bit of sub-function code
Low bit of sub-function code
High bit of data content
Low bit of data content
CRC CHK low bit
CRC CHK high bit
The RTU response command is:
High bit of sub-function code
Low bit of sub-function code
High bit of data content
Low bit of data content
CRC CHK low bit
CRC CHK high bit
9.4.1.4 Command code: 10H, continuous writing
Command code 10H means that if the master writes data to the inverter, the data number depends on the
"data number" in the command code. The Max. continuous reading number is 16.
For example, write 5000 (1388H) to 0004H of the inverter whose slave address is 02H and 50 (0032H) to
0005H, the frame structure is as below:
The RTU request command is:
High bit of write data
Low bit of write data
High bit of data number
Low bit of data number
Byte number
High bit of data 0004H
Low bit of data 0004H
High bit of data 0005H
Low bit of data 0005H
Low bit of CRC
High bit of CRC
Communication Protocol
START
ADDR
CMD
END
START
ADDR
CMD
END
START
ADDR
CMD
END
T1-T2-T3-T4 (transmission time of 3.5 bytes)
01H
08H
00H
00H
12H
ABH
ADH
14H
T1-T2-T3-T4 (transmission time of 3.5 bytes)
T1-T2-T3-T4 (transmission time of 3.5 bytes)
01H
08H
00H
00H
12H
ABH
ADH
14H
T1-T2-T3-T4 (transmission time of 3.5 bytes)
T1-T2-T3-T4 (transmission time of 3.5 bytes)
T1-T2-T3-T4 (transmission time of 3.5 bytes)
02H
10H
00H
04H
00H
02H
04H
13H
88H
00H
32H
C5H
6EH
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