Write Multiple Registers (Command Code: 0X10) - Mitsubishi FX3U Series User Manual

FX Series Programmable Controllers
3U
User's Manual - MODBUS Serial Communication Edition
7.15

Write Multiple Registers (Command Code: 0x10)

Writes values to multiple holding registers.
1) Request message format (Master → Slave)
Function code
Function Head holding
code register number
(10 ) (0000
H
H
(H)
*1. The number of the specified write points must be matched with the number of bytes.
2) Response message format (Slave → Master)
(When completed normally)
(When completed with an error)
*2. Exception and error codes are stored in special data registers and special auxiliary relays in the case
of error completion. Refer to Chapter 6 for storage location, confirmation methods, and other detailed
contents.
74
Write points
*1
n
to FFFF ) (0001 to 007B
H H
(L) (L)
(H)
Function code
Function
Head holding register number
code
(The value same as in the
(10 )
H
request message is stored.)
(H)
Function code
Function
code
(90
7.15 Write Multiple Registers (Command Code: 0x10)
Data
Number of
Device
*1
bytes, n x 2
data
(0002 to
)
H
H
00F6 )
H
(H)
Data
Write points
(The value same as in the
request message is stored.)
(L) (H)
Data
Exception
2
code *
)
H
7 MODBUS Standard Commands
Device
. . .
data
1
(L) (H)
(Number of bytes n x 2)
(L)
n
(L)