Sequence Program For Data Transmission - Mitsubishi QJ71C24/-R2 User Manual

7 DATA COMMUNICATIONS USING BIDIRECTIONAL PROTOCOL

7.2.3 Sequence program for data transmission

Transmission
instruction
M0 M1
M1
Q series C24 ready signal
Transmission instruction
BIDOUT instruction
BIDOUT instruction complete device
BIDOUT instruction complete device + 1
(Normal completion/abnormal completion)
Transmission data count designation area
(buffer memory address: 400
Transmission data storage area
(buffer memory address: 401
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A sequence program for data transmission is explained below.
For details on the BIDOUT instruction for data transmission, see Chapter 9.
1)
(X1E)
2)
3)
0
)
H
to)
H
Data transmission
Create transmission data from D11
Create control data from D0
G.BIDOUT Un D0
Processing for normal completion
Processing for abnormal completion
(retransmission, etc.)
BIDOUT
4)
Transmission data
MELSEC-Q
(In case of the CH1 side)
D11 M0
ON when transmission
abnormal completion
1 scan
n
Receiving response
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