Mitsubishi MELSEC Q Series Reference Manual page 125

External
device side
Programmable controller CPU side
External
device side
Programmable controller CPU side
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3 WHEN COMMUNICATING USING THE QnA COMPATIBLE 3E/3C/4C FRAMES OR 4E FRAME
(b) Data in data fields when communicating in binary code
(Example)
Reading data
Data section
(Corresponds to character area A)
L H L H L H
–
(Example)
Writing data
Data section (Corresponds to character area C)
L H L H L H
–
The data arrangement and content of the area marked with " " are
shown in Section 3.1.
(c) Contents of data common to character areas
1) Subcommand
This value designates the read/write units, type of device designated,
conditions for reading data, etc.
a) When data is communicated in ASCII code
The value 0000
digit (hexadecimal) ASCII code and sequentially transmitted
beginning from the most significant digit ("0").
b) When data is communicated in binary code
The value 0000
transmission.
Data section
(Corresponds to character area B)
(0), or the following value, is converted to a 4
H
, or the following 2-byte value, is used for
H
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