B − 13 – Hitachi X200 Series User Manual
Page 240
Write in Holding Register [06h]:
This function writes data in a specified holding register. An example follows:
• Write “50Hz” as the first Multi-speed 0 (A020) in an inverter having slave address
“5.”
• This example uses change data “500(1F4h)” to set “50Hz” as the data resolution of
the register “1029h” holding the first Multi-speed 0 (A020) is 0.1Hz
Query:
Response:
No.
Field Name
Example
(Hex)
No.
Field Name
Example
(Hex)
1
Slave address *1
08
1
Slave address
08
2
Function code
06
2
Function code
06
3
Register start address
*2
(high order)
10
3
Register start address
*2
(high order)
10
4
Register start address
*2
(low order)
28
4
Register start address
*2
(low order)
28
5
Change data
(high order)
01
5
Change data
(high order)
01
6
Change data
(low order)
F4
6
Change data
(low order)
F4
7
CRC-16 (high order)
0D
7
CRC-16 (high order)
0D
8
CRC-16 (low order)
8C
8
CRC-16 (low order)
8C
Note 1:
No response is made for a broadcasting query.
Note 2:
The PDU Register Number are addressed starting at zero. Therefore register
numbered “1029h” are addressed as “1028h”. Register address value
(transmitted on Modbus line) is 1 less than the Register Number.
When writing in a selected holding register fails, see the exception response.
B−13
Appe
ndix B