Mitsubishi Electric FR-A820-00046 (0.4K), Инструкция по эксплуатации

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Parameters Ethernet communication (FR-A800-E)
FR-A800 5 - 793
Preset multiple registers (writing 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 in
to
!
of the query message.
Transaction
identifier
Protocol
Identifier
Length field Unit
identifier
Func-
tion
Starting
address
!
No. of points
"
Byte
count
#
Data
H
(8 bits)
L
(8 bits)
H
(8 bits)
L
(8 bits)
H
(8 bits)
L
(8 bits)
(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)
Transaction
identifier
Protocol
Identifier
Length field Unit
identifier
Func-
tion
Starting
address
!
No. of points
H
(8 bits)
L
(8 bits)
H
(8 bits)
L
(8 bits)
H
(8 bits)
L
(8 bits)
(8 bits)
H10
(8 bits)
H
(8 bits)
L
(8 bits)
H
(8 bits)
L
(8 bits)
Message Description
Transaction identifier
The master adds the data for the purpose of transaction control.
The same data is returned in the response from the slave.
Protocol Identifier
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.
Length field The data length from the unit identifier to the data is stored in byte.
Unit identifier Fixed to 255
Function Set H10.
Starting address
Set the holding register address from which to start writing the data.
Starting 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 the value set in
!
multiplied by 2.
#
Data
The amount of data specified by
!
is set. Write data is output Hi bytes first followed by
Lo bytes, and is arranged as follows: data of start address, data of start a 1, data
of start a 2, and so forth.
Tab. 5-374: Description of the query message