Mitsubishi Electric MELSEC iQ-R Series - Batch Write Multiple Blocks (Command: 1406)

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8 DEVICE ACCESS
8.4 Batch Read and Write Multiple Blocks
Batch write multiple blocks (command: 1406)
Write values for specified multiple blocks by handling consecutive word devices or bit devices as one block.
Each block can be specified with discontinuous device numbers.
When communicating with a Universal model QCPU or an LCPU, if other than "Specify service process
execution counts" is selected for "Service Processing Setting" of the CPU module, data separation may occur.
To avoid data separation, select "Specify service process execution counts".
When accessing any of the following devices, use the device extension specification (subcommand: 008).
• Link direct device
• Module access device
• CPU buffer memory access device
For the message format for device extension specification, refer to the following section.
Page 438 Read/Write by Device Extension Specification
Message format
The following shows the message format of the request data and response data of the command.
■Request data
■Response data
There is no response data for this command.
Data specified by request data
■Command
■Subcommand
■Number of word device blocks, number of bit device blocks
Specify the number of device blocks to be written in hexadecimal. (Page 73 Number of blocks)
ASCII code Binary code
Type ASCII code Binary code
For MELSEC-Q/L series
For MELSEC iQ-R series
Number of word
device blocks
(m points)
Number of bit
device blocks
(n points)
Block of word
device
(first point)
Block of word
device
(mth point)
Command Subcommand
Block of bit device
(first point)
Block of bit device
(nth point)
1
31H
4
34H
0
30H
6
36H
06 H 14 H
0
30H
0
30H
0
30H
0
30H
00 H 00 H
0
30H
0
30H
0
30H
2
32H
02 H 00 H