Hitachi SJ7002 Series Instruction Manual page 313

B–30
ModBus Mode Communications
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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 "1."
• 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:
No. Field Name
1 Slave address *1
2 Function code
3 Start address (high
order) *2
4 Start address (low order)
*2
5 Number of holding
registers (high order)
6 Number of holding
registers (low order)
7 Byte number *3
8 Change data 1 (high
order)
9 Change data 1 (low
order)
10 Change data 2 (high
order)
11 Change data 2 (low
order)
12 CRC-16 (high order)
13 CRC-16 (low order)
Note 1: Broadcasting is disabled.
Note 2: The starting coil number is one
less than the number of the coil to
be read first.
When the Write Holding Register command cannot be executed normally, refer to the
exception response.
Response:
Example
No. Field Name
(hex)
01 1 Slave address *1
10 2 Function code
11 3 Register start number
(high order)
02 4 Register start number
(low order)
00 5 Number of holding
registers (high order)
02 6 Number of holding
registers (low order)
04 7 CRC-16 (high order)
00 8 CRC-16 (low order)
04
93
E0
9E
9F
Example
(hex)
01
10
11
02
00
02
E5
34