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6 SEQUENCE PROGRAM USED FOR POSITIONING CONTROL
Positioning start signal
Remote station READY signal [ RX(n+7)B ]
D75P2 READY signal
Start complete signal
BUSY signal
Error detection signal
Positioning start No.
Zero point return request flag
Zero point return complete flag
Starting time chart
The time chart for starting each control is shown below.
(1) Time chart for starting "machine zero point return"
V
[ RY(n+1)0 ]
OFF
ON
[RXn0]
OFF
[RXn1]
OFF
[ RXn 4]
[ RXn A]
[ RWwm ]
OFF
[ RX(n+1)F ]
OFF
[ RX(n+2)0 ]
Fig. 6.4 Time chart for starting "machine zero point return"
Near-point dog
Zero point signal
ON
OFF
ON
OFF
ON
ON
OFF
9001
ON
6 - 55
MELSEC-A
t
ON
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