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MELSEC-Q
6 DATA COMMUNICATION USING THE NON PROCEDURE 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 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 X3
Sequence program
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
Summary of Contents for MELSEC QJ71C24
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