Senlan Hope800 Series Manual page 136

6 Parameter Description
Query from master:
Slave address
Modbus function code
Start address(MSB)
Start address(LSB)
Word number read(MSB)
Word number read(LSB)
CRC(MSB)
CRC(LSB)
 Function 6: single writing. Word is fixed at 1, and the query from master is consistent with response from
slave. Refer to the following example for its message format.
Example: to make the #1 slave runs forward, you can rewrite the contents of address 3200H into 003FH:
Query from master:
Slave address
Modbus function code
Start address(MSB)
Start address(LSB)
Word number read(MSB)
Word number read(LSB)
CRC(MSB)
CRC(LSB)
Function 16: write multiple parameters. Word number written ranges from 1 to 10. Refer to the following
example for its message format.
Example: to make the #1 slave runs forward at 50.00Hz, you can rewrite the two words with their
addresses beginning with 3200H into 003FH and 1388H.
Query from master:
Slave address
Modbus function code
Start address(MSB)
Start address(LSB)
Word number
written(MSB)
Word number written(LSB)
Byte number written
MSB of 1st data
LSB of 1st data
MSB of 2nd data
LSB of 2nd data
CRC(LSB)
CRC(MSB)
Example: to make the #1 slave stop(forward run at 50.00Hz), you can rewrite the two words with their
addresses beginning with 3200H into 003EH and 1388H.
Query from master:
132
01H
03H
32H
10H
00H
03H
0AH
B6H
01H
06H
32H
00H
00H
3FH
C7H
62H
01H
10H
32H
00H
00H
02H
04H
00H
3FH
13H
88H
83H
94H
Response from slave:
Slave address
Modbus function code
Byte number returned
MSB of 3210H
LSB of 3210H
MSB of 3211H
LSB of 3211H
MSB of 3212H
LSB of 3212H
CRC(LSB)
CRC(MSB)
Response from slave:
Slave address
Modbus function code
Start address(MSB)
Start address(LSB)
Word number read(MSB)
Word number read(LSB)
CRC(MSB)
CRC(LSB)
Response from slave:
Slave address
Modbus function code
Start address(MSB)
Start address(LSB)
Word number
written(MSB)
Word number
written(LSB)
CRC(LSB)
CRC(MSB)
Response from slave:
01H
03H
06H
44H
37H
13H
88H
00H
00H
5FH
5BH
01H
06H
32H
00H
00H
3FH
C7H
62H
01H
10H
32H
00H
00H
02H
4FH
70H