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MELSEC-F
FIXED BUFFER COMMUNICATION (WITH THE PROCEDURE EXIST
CONTROL METHOD)
6
6 - 9
6.4.2 Application data
As shown below, the data code in the application data can be expressed in either
binary code or ASCII code. Switching between binary code and ASCII code is
performed via the communication data code setting (BFM #24 b1 OFF: binary code,
ON: ASCII code).
(When setting using the FX Configurator-EN, 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
(b) Communication using ASCII code
Subheader
LH
2 bytes
LH
2 bytes
Text
(command)
Maximum
1017 words
(2 bytes used per word)
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)
Subheader
4 bytes 4 bytes
Text
(command)
Maximum
508 words
(4 bytes used per word)
Subheader
End code
2 bytes 2 bytes
Communication
request
source side
Communication request
destination side
Data length
setting
L
H
-
-
L
H
-
-
L
H
LH
Application data section
(command message)
Application data section
(response)