Mitsubishi Electric FR-F740 EC Instruction Manual page 446

Communication operation and setting
● Write multiple holding register data (H06 or 06)
You can write the description of system environment variables and inverter parameters
assigned to the holding register area. (Refer to the register list on page 6-301.)
Query message
Slave
Address
(8 bits)
Normal response (Response message)
Slave
Address
(8 bits)
Message
Slave Address
Function
Register Address
Preset Data
Tab. 6-79:
The normal response data
as those of the query message. No response is made for broadcast communication.
Example To write 60Hz (H1770) to 40014 (running frequency RAM) at slave address 5 (H05).
Query message
Slave
Address
H05
(8 bits)
Normal Response (Response message):
Same data as the query message.
NOTE For broadcast communication, no response is returned in reply to a query. Therefore, the
next query must be made when the inverter processing time has elapsed after the previous
query.
6 - 296
Function Register Address
H06 H
(8 bits) (8 bits)
Function Register Address
H06 H
(8 bits) (8 bits)
Description
Set the address to which the message will be sent. Setting of address 0
enables broadcast communication.
Set H06.
Set the address of the holding register to which data will be written.
Register address = holding register address (decimal) − 40001
For example, setting of register address 0001 writes data to the holding
register address 40002.
Set the data that will be written to the holding register. The written data is
fixed to 2 bytes.
Description of the query message
to (including CRC check) of the normal response are the same
Function Register Address
H06 H00
(8 bits) (8 bits)
Preset Data
L H
(8 bits) (8 bits)
Preset Data
L H
(8 bits) (8 bits)
Preset Data
H0D H17
(8 bits) (8 bits)
Parameter
CRC Check
L L
(8 bits) (8 bits)
CRC Check
L L
(8 bits) (8 bits)
CRC Check
H70 H17
(8 bits) (8 bits)
H
(8 bits)
H
(8 bits)
H99
(8 bits)