6 SEQUENCE PROGRAM USED FOR POSITIONING CONTROL

MELSEC-Q

Starting time chart

The time chart for starting each control is shown below.

(1) Time chart for starting "machine OPR"

Positioning start signal

PLC READY signal

QD75 READY signal

Start complete signal

BUSY signal

Error detection signal

Cd. 3 Positioning start No.

OPR request flag

[ Md. 31 Status: b3]

OPR complete flag

[ Status: b4]

V

t

Near-point dog

Zero signal

ON

[Y10]OFF

ON

[Y0] OFF

ON

[X0]

OFF

 

ON

[X10] OFF

ON

[XC] OFF

[X8]OFF

9001

ON OFF

ON

OFF

Fig. 6.4 Time chart for starting "machine OPR"

6 - 30

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Mitsubishi Electronics QD75P, QD75D user manual Starting time chart, X10 OFF, 9001