16 (0X10) Write Multiple Registers - Hitachi HX-RIO3 Series User Manual

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A.3.9. 16 (0x10) Write Multiple Registers
This function code is used to write a block of contiguous registers (1 to approx. 120 registers) in a remote
device.
The requested written values are specified in the request data field. Data is packed as two bytes per
register.
The normal response returns the function code, starting address, and quantity of registers written.
•
Request
Field name
Start of Frame
Slave Address
Function Code
Starting Address Hi
Starting Address Lo
Quantity of Registers Hi
Quantity of Registers Lo
Byte Count
Register Value #0 Hi
Register Value #0 Lo
Register Value #1 Hi
Register Value #1 Lo
Error Check (CRC/LRC)
End of Frame
•
Response
Field name
Start of Frame
Slave Address
Function Code
Starting Address Hi
Starting Address Lo
Quantity of Outputs Hi
Quantity of Outputs Lo
Error Check (CRC/LRC)
End of Frame
- In case of address 0x0800, 0x0801 output register value: 0x0000, 0x0000 changes to 0x1122, 0x3344.
Example RTU
- t1-t2-t3
0x07 0x07
0x0F 0x0F
0x08 0x08
0x00 0x00
0x00 0x00
0x02 0x02
0x04 0x04
0x11 0x11
0x22 0x22
0x33 0x33
0x44 0x44
- 0x3B, 0x12
- t1-t2-t3
Example RTU
- t1-t2-t3
0x07 0x07
0x0F 0x0F
0x08 0x08
0x00 0x00
0x00 0x00
0x02 0x02
- 0x43, 0xCE
- t1-t2-t3
HX-RIO3 Series