98
1 FUNCTIONS
1.6 Communications Using the Random Access Buffer
Application data
The application data expresses the following data code as binary code or ASCII code. Switch between the binary code and
ASCII code with "Own Node Settings" under "Basic Settings". ( Page 242 Own Node Settings)
■Format
• When exchanging data with binary codes
• When exchanging data with ASCII codes
■Subheader
The RJ71EN71 or the RnENCPU (network part) automatically adds and deletes the subheader, the setting is not required.
H 00H L H LH
2 bytes
Application data area
(command message)
2 bytes 2 bytes
End code
1 byte
1 byte
Application data area
(Response)
Communication
request destination
Data length
setting
Subheader
Subheader
Communication
request source
Text
(command)
(none at read
request)
Start address
Maximum of
1017 words
Maximum of
1017 words
Text
(response)
(none at write
request)
30H
H L
30H
LH - - LH - -
HL HL
4 bytes
Application data area
(command message)
4 bytes 4 bytes
End code
2 byte
2 byte
Application data area
(Response)
Communication
request destination
Data length
setting
Subheader
Subheader
Communication
request source
Text
(command)
(none at read
request)
Start address
Maximum of
1016 words
Maximum of
1016 words
Text
(response)
(none at write
request)
b7
b6
b5
b4 b3 b2 b1 b0
11000001
00H
Command/response type
(When communications are performed using the random access
buffer, this format is used.)
For data read: 61H
For data write: 62H
Command/response flag
For command: 0
For response: 1
Only for command (not for response)
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