Mitsubishi-electric QJ71C24N Manuel d'utilisateur télécharger pdf (Page 170)

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MELSEC-Q

7 DATA COMMUNICATIONS USING BIDIRECTIONAL PROTOCOL

7.2.3 Sequence program for data transmission

A sequence program for data transmission is explained below.

For details on the BIDOUT instruction for data transmission, see Chapter 9.

G.BIDOUT Un D0 D11 M0

M0 M1

Transmission

instruction

Create transmission data from D11

(In case of the CH1 side)

Create control data from D0

Processing for normal completion

Processing for abnormal completion

(retransmission, etc.)

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

to)

BIDOUT

(X1E)

1 scan

Transmission data

Data transmission

ON when transmission

abnormal completion

Receiving response

1 2 ... 165 166 167 168 169 170 171 172 173 174 175 ... 357 358

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Mitsubishi-electric QJ71C24N Manuel d'utilisateur Page 170

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