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MELSEC-Q
6 PLC PROGRAM USED FOR POSITIONING CONTROL
(4) Time chart for starting "speed-position switching control"
V
t
Dwell time
Operation pattern(00)
Speed control
Speed-position switching signal
Position control
0
1
1
Positioning data No.(1)
Positioning start signal
PLC READY signal
QD75 READY signal
Start complete signal
BUSY signal
Error detection signal
Positioning complete signal
Cd. 3 Positioning start No.
Cd. 24 Speed-position
switching enable flag
[Y10]
[Y0]
[X0]
[X10]
[XC]
[X14]
[X8]
(external)
All axis servo ON
[Y1]
Fig. 6.7 Time chart for starting "speed-position switching control"
(5) Time chart for starting "position-speed switching control"
Positioning start signal
Sequencer READY signal
QD75 READY complete signal
Start complete signal
BUSY signal
Positioning complete signal
V
t
Error detection signal
Operation pattern (00)
Positioning data No. (1)
Position control
Speed control
0
1
Cd. 3 Positioning start No.
Cd. 26 Position-speed
switching enable flag
1
[Y10]
[Y0]
[X0]
[X10]
[XC]
[X14]
[X8]
Stop command
Position-speed switching signal
(external)
All axis servo ON
[Y1]
Fig. 6.8 Time chart for starting "position-speed switching control"