Mitsubishi Electric FR-A800, Instruction Manual

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(N) Operation via communication and its settings Parameters
5 - 638
Preset Multiple Registers (writing of data to multiple holding registers) (H10 or 16)
●
Data can be written to multiple holding registers.
●
Query message
●
Normal response (Response message)
●
Query message setting
●
Content of normal response
With a normal response, the content is the same as
to (including the CRC check) query
messages.
Slave
Address
Function
Starting
Address
No. of Registers ByteCount
Data CRC Check
(8 bits)
H10
(8 bits)
H
(8 bits)
L
(8 bits)
H
(8 bits)
L
(8 bits)
(8 bits)
H
(8 bits)
L
(8 bits)
...
(n × 2 × 8
bits)
L
(8 bits)
H
(8 bits)
Slave Address
Function Starting Address No. of Registers CRC Check
(8 bits)
H10
(8 bits)
H
(8 bits)
L
(8 bits)
H
(8 bits)
L
(8 bits)
L
(8 bits)
H
(8 bits)
Message Description
Slave Address Set the address to send messages to. Setting "0" enables broadcast communication.
Function Set H10.
Starting Address
Set the address from which to start writing of data to the holding register.
Start address = start register address (decimal) - 40001
For example, when start register address 0001 is set, the data of holding register address
40002 is read.
No. of Points
Set the number of holding registers to write to. Data can be written to up to 125
registers.
Byte Count
The setting range is H02 to HFA (2 to 250).
Set twice the value specified by d.
Data
Set the amount of data specified by d. Set write data Hi bytes first followed by Lo bytes,
and arrange it as follows: data of start address, data of start 1, data of start
2, and so forth.
Tab. 5-287: Description of the query message
Example
쑴
Write 0.5 s (H05) to 41007 (Pr. 7) and 1 s (H0A) to 41008 (Pr. 8) of slave address 25 (H19).
Query message
Normal response (Response message)
쑶
Slave
Address
Func-
tion
Starting Address No. of Points
Byte
Count
Data
CRC
Check
H19
(8 bits)
H10
(8 bits)
H03
(8 bits)
HEE
(8 bits)
H00
(8 bits)
H02
(8 bits)
H04
(8 bits)
H00
(8 bits)
H05
(8 bits)
H00
(8 bits)
H0A
(8 bits)
H86
(8 bits)
Slave
Address
Function Starting Address No. of Points CRC Check
H19
(8 bits)
H10
(8 bits)
H03
(8 bits)
HEE
(8 bits)
H00
(8 bits)
H02
(8 bits)
H22
(8 bits)
H61
(8 bits)