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APPENDICES
MELSEC-A
APPENDIX
9.
Example of a Sequence Program for Data Communications in the
Bidirectional Mode
The following figure gives the example of a sequence program for transmitting
data received from the computer and the data of the data register (D100) of a
PC CPU to the computer in the bidirectional mode.
Received data read-
_ _
FROM
Send data write
TO
Send
result read
- - -
ACK
FROM
'
( 1 )
Settings t o the buffer memory
The figure below describes settings at the special-applications area of
AJ71 C24 buffer memory.
Appendix
11
gives details of the memory setting record form.
APP
-
30
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