Application Data - Mitsubishi Electric MELSEC-L SERIES Basic User Manual

13.4.2

Application data

In the application data for communications with the "Procedure Exist" control method, the following data code is
expressed in a binary code or an ASCII code. To switch between a binary code and an ASCII code, use the Ethernet
operation setting.
Project window
"Ethernet" under "Network Type".
(1) Format
• Communications using a binary code
2 bytes
Communication
Subheader
request
source
H
Communication
request
destination
• Communications using an ASCII code
4 bytes
Subheader
Communication
request source
H L 30
H
Communication
request destination
[Parameter]
Application data area
(command message data)
2 bytes 2 bytes
Data length
Start address
setting
00 L H L H
H
Application data area
(command message)
4 bytes 4 bytes
Data length
Start address
setting
30 H - - L H - -
H
CHAPTER 13 COMMUNICATIONS USING A RANDOM ACCESS BUFFER
[Network Parameter]
Maximum of
1017 words
Text
(command)
(none at read
request)
Subheader
1 byte
Maximum of
1016 words
Text
(command)
(none at read
request)
L
Subheader
H
2 bytes
[Ethernet/CC IE Field] Select
button
Text
(response)
End code
(none at write
request)
Maximum of
1 byte
1017 words
Application data area
(response)
Text
(response)
End code
(none at write
request)
L H L
2 bytes Maximum of
1016 words
Application data area
(response)
13
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