Chapter 8 Communication Functions
8 - 15
(G) Write in Holding Registers [10h]
This function writes data in consecutive holding registers. An example follows:
Write “3000 seconds” as the first acceleration time 1 (F002) in an inverter having a slave
address “8.”
This example uses change data “300000(493E0h)” to set “3000 seconds” as the data resolution
of the registers “1103h” and “1104h” holding the first acceleration time 1 (F002) is 0.01 second.
Query: Response:
No.
Field Name
Example
(Hex)
No.
Field Name
Example
(Hex)
1
Slave address *1
08
1
Slave address
08
2
Function code
10
2
Function code
10
3
Start address *3
(high order)
11
3
Start address *3
(high order)
11
4
Start address *3
(low order)
02
4
Start address *3
(low order)
02
5
Number of holding
registers (high order)
00
5
Number of holding
registers (high order)
00
6
Number of holding
registers (low order)
02
6
Number of holding
registers (low order)
02
7
Byte number *2
04
7
CRC-16 (high order)
E5
8 Change
data
1
(high order)
00 8
CRC-16
(low
order)
AD
9 Change
data
1
(low order)
04
10 Change
data
2
(high order)
93
11 Change
data
2
(low order)
E0
12 CRC-16
(high
order)
B0
13 CRC-16
(low
order)
03
Note 1:
Broadcasting
is
disabled.
Note 2:
This is not the number of holding registers. Specify the number of bytes of data to be
changed.
Note 3:
The PDU Register Number are addressed starting at zero. Therefore register numbered
“1103h” are addressed as “1102h”. Register address value (transmitted on Modbus line)
is 1 less than the Register Number.
When writing in selected holding registers fails, see the exception response.
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