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MELSEC-
A
6 SEQUENCE PROGRAM USED FOR POSITIONING CONTROL
Starting time chart
The time chart for starting each control is shown below.
(1) Time chart for starting "machine zero point return"
D75P2 READY signal
Start complete signal
BUSY signal
Error detection signal
OFF
OFF
ON
ON
ON
ON
OFF
OFF
OFF
9001
ON
ON
OFF
OFF
Near-point dog
V
t
Zero point return request flag
Positioning start No.
Positioning start signal
[
RY(n+1)0
]
Remote station READY signal
[RX(n+7)B]
[RXn0]
[
RXn1
]
[RXn4]
[
RXnA]
Zero point return complete flag
Zero point signal
[
RWwm]
[
RX(n+1)F
]
[
RX(n+2)0
]
OFF
ON
Fig. 6.4 Time chart for starting "machine zero point return"