MITSUBISHI ELECTRIC QJ71C24N - Manual (Page 129)

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MELSEC-Q
6 DATA COMMUNICATION USING THE NON PROCEDURE PROTOCOL
REMARK
(1) Data reception when the receive data storage area is larger than
the receive data length
The following control is performed.
(Example) When the receive area for the CH1 side interface is located at
addresses 600 H to 7FF H (default values) and data of 511 words or
less is received by the CH1 side interface.
INPUT
Q series C24
Complete code
External device 100 words
Reception data read
request signal
Sequence program
X3
Read data count: 100 words
(2) Data reception when the receive data storage area is smaller
than the 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 located 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
Q series C24
Read data count:
511 words Read data count:
23 words
Complete code