6 DATA COMMUNICATION USING THE NON PROCEDURE PROTOCOL MELSEC-Q

Q series C24 ready signal

(X1E)

 

1)

 

 

 

 

 

 

 

Transmission instruction

 

 

2)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OUTPUT instruction

 

 

3)

 

OUTPUT

 

 

 

 

 

 

OUTPUT instruction complete device

 

 

 

 

4)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ON when transmission

OUTPUT instruction complete device + 1

 

 

 

 

 

 

 

abnormal completion

(normal completion/abnormal

 

 

 

 

 

 

 

 

 

1 scan

completion)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Transmission data count designation area

 

 

 

 

 

 

 

 

 

(buffer memory address: 400H)

 

 

 

0

 

 

 

n

 

Transmission data storage area

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Transmission data

 

(buffer memory address: 401H to)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Transmitting data

1)Starts the local station PLC.

The setting values for GX Developer are stored in the Q series C24.

2)Inputs the user data transmission command signal.

3)Executes the OUTPUT instruction after storing the transmission data and the control data for the OUTPUT instruction in the device.

Data is sent when the OUTPUT instruction is executed.

4)When the Q series C24 transmission processing completes, the completion device for the OUTPUT instruction turns ON.

When the completion device + 1 (abnormal completion signal) turns ON, the error code is stored in the control data completion status (S1+1).

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