Preset Single Register - Mitsubishi Electric A800-E Instruction Manual

Preset single register (writing data to holding registers) (H06 or 06)
• The content of the system environmental variables and inverter parameters (refer to MODBUS register on
assigned to the holding register area can be written.
• Query message
a. Transaction b. Protocol
identifier identifier
H L H
(8 bits) (8 bits) (8 bits)
• Normal response (Response message)
a. Transaction b. Protocol
identifier identifier
H L H
(8 bits) (8 bits) (8 bits)
• Query message setting
Message
a Transaction identifier
b Protocol identifier
c Length field
d Unit identifier
e Function
f Register address
g Preset data
• Content of normal response
With a normal response, the contents in the response are the same as those in (a) to (g) of the query message.
Example) Write 60 Hz (H1770) to 40014 (running frequency RAM) of slave address 5 (H05).
Query message
Transaction Protocol
identifier identifier
H00
 
(8 bits)

A given value is set.
Normal response (Response message)
The same data as those in the query message
c. Length field
L H L
(8 bits) (8 bits) (8 bits)
c. Length field
L H L
(8 bits) (8 bits) (8 bits)
The master adds the data for the purpose of transaction control.
The same data is returned in the response from the slave.
Fixed to 0. (When the slave receives data other than 0, it does not send the response
message.)
0 is returned in the response from the slave.
The data length from the unit identifier to the data is stored in byte.
Fixed to 255
Set H06.
Set the holding register address to write data to.
Register address = holding register address (decimal) - 40001
For example, when register address 0001 is set, data is written to holding register address
40002.
Set the data to write to the holding register. Write data is fixed at 2 bytes.
Length field
H00 H00 H06
(8 bits) (8 bits) (8 bits)
(N) Operation via communication and its settings
d. Unit
e. Function
identifier
H06
(8 bits)
(8 bits)
d. Unit
e. Function
identifier
H06
(8 bits)
(8 bits)
Description
Unit
Function Register address
identifier
H05 H06 H00
(8 bits) (8 bits) (8 bits)
page 48)
f. Register
g. Preset data
address
H L H
(8 bits) (8 bits) (8 bits)
f. Register
g. Preset data
address
H L H
(8 bits) (8 bits) (8 bits)
Preset data
H0D H17 H70
(8 bits) (8 bits) (8 bits)
PARAMETER
L
(8 bits)
L
(8 bits)
2
GROUP
N
43