Shenzhen Nowforever Electronics Technology DK00 Series, User Manual

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102
MODBUS Communication Protocol
Command information
Slave address 02H
Function code
10H
Start address
Low byte
00H
Number
High byte
00H
Low byte 02H
data number 04H
Start data
High byte
00H
Low byte
01H
T h e n e x t d ata
High byte
00H
Low byte 01H
CRC-16
High byte 6CH
Low byte EBH
R e m a r k s: D a ta n um b e r= q ua n t ity * 2
Slave address 02H
Function code
10H
Start address
High byte 00H
Low byte
00H
Number
High byte
00H
Low byte 02H
CRC-16
High byte 51H
Low byte 9FH
Slave address 02H
Function code
80H
Error code
01H
CRC-16
High byte 31H
Low byte C2H
9.3.3 Write into multi-storage register
A maximum of 16 can be written into the contents of
inverter memory registers every time.
The specified data are written specified number into the
specified storage register . Write into data must in accordance with
the number order of register, respectively, according to a high 8 bits,
low 8bits order array in the instruction information.
From PLC to the slave2 of inverter modify 000H
、
001H
information of register,samples as below:
High byte 00H
Response information (normal)
Response information (fault)
Chart 9-6 write instruction samples of serial communication