Communication Protocol
113 - 144
The RTU request command is:
START
T1-T2-T3-T4 (transmission time of 3.5 bytes)
ADDR 01H
CMD 08H
High bit of sub-function code
00H
Low bit of sub-function code
00H
High bit of data content
12H
Low bit of data content
ABH
CRC CHK low bit
ADH
CRC CHK high bit
14H
END
T1-T2-T3-T4 (transmission time of 3.5 bytes)
The RTU response command is:
START
T1-T2-T3-T4 (transmission time of 3.5 bytes)
ADDR 01H
CMD 08H
High bit of sub-function code
00H
Low bit of sub-function code
00H
High bit of data content
12H
Low bit of data content
ABH
CRC CHK low bit
ADH
CRC CHK high bit
14H
END
T1-T2-T3-T4 (transmission time of 3.5 bytes)
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:
START
T1-T2-T3-T4 (transmission time of 3.5 bytes)
ADDR 02H
CMD 10H
High bit of write data
00H
Low bit of write data
04H
High bit of data number
00H
Low bit of data number
02H
Byte number
04H
High bit of data 0004H
13H
Low bit of data 0004H
88H
High bit of data 0005H
00H
Low bit of data 0005H
32H
Low bit of CRC
C5H
High bit of CRC
6EH
END
T1-T2-T3-T4 (transmission time of 3.5 bytes)
Summary of Contents for CV50-008-4F
Page 1: ...USER MANUAL INVERTER CONTROLVIT CV50 ...
Page 2: ......
Page 84: ...84 144 Function Parameters ...
Page 101: ...Fault Tracking 101 144 8 6 4 Undervoltage fault 8 6 5 Abnormal motor heat ...
Page 142: ... ...
Page 143: ... ...