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MELSEC-F
6 FIXED BUFFER COMMUNICATION (WITH THE PROCEDURE EXIST
CONTROL METHOD)
6.4.2 Application data
As shown below, the data code in the application data can be expressed in either
binary or ASCII code. Switching between binary code and ASCII code is performed via
the communication data code setting (BFM #24 b1 OFF: binary, ON: ASCII code).
(When setting using the FX Configurator-EN (GX Developer), select [Operational
Settings] from the initial screen, and adjust the settings from the [Operational Settings]
screen.)
For more details, see Section 4.6, "Operational Settings".
(1) Format
(a) Communication using binary code
Subheader
L
H
2 bytes
L
H
2 bytes
Text
(command)
Maximum
2 bytes
Subheader
End code
1 byte
1 byte
Application data section
(response)
Communication
request
source side
Communication request
destination side
Data length
setting
Application data section
(command message)
(b) Communication using ASCII code
Subheader
4 bytes
4 bytes
Text
(command)
Maximum
4 bytes 588 words
Subheader
End code
2 byte
2 byte
Communication
request
source side
Communication request
destination side
Data length
setting
L
H
-
-
L
H
-
-
L
H
L
H
Application data section
(command message)
Application data section
(response)
Содержание FX3U-ENET
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