Mitsubishi MELSEC LJ71C24, User Manual

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10 DATA COMMUNICATION USING THE NONPROCEDURAL PROTOCOL
REMARKS
(1) Data reception when: Receive data storage area > Receive data
length
The following control is performed.
(Example) When the receive area for the CH1 side interface is at addresses
600
H
to 7FF
H
(default values) and data of 511 words or less is
received by the CH1 side interface.
INPUT
C24 side
Complete code
External device
100 words
Reception data read
request X3
Sequence program
Read data count: 100 words
(2) Data reception when: Receive data storage area < Receive data
length
Since the following control is performed, data link processing is required in the
sequence program.
1) Reception using the complete code
(Example) When the receive area for the CH1 side interface is at
addresses 600
H
to 7FF
H
(default values), and data of 534
words is received by the CH1 side interface.
External device
Reception data read request X3
511 words
Sequence program
INPUT
INPUT
23 words
C24 side
Read data count:
511 words Read data count:
23 words
Complete code