9 MAJOR POSITIONING CONTROL

MELSEC-Q

Operation timing and processing time during speed-position switching control (INC mode)

Positioning start

signal [Y10,Y11,Y12,Y13]

BUSY signal

 

[XC,XD,XE,XF]

t1

 

M code ON signal [X4,X5,X6,X7](WITH mode)

Cd.7 M code OFF request

t2

Start complete signal

 

[X10,X11,X12,X13]

t3

 

Md.26 Axis operation status

Standing by In speed control In position control Standing by

 

t4

Output pulse to external source (PULSE)

Positioning operation

External speed-position switching command

Cd. Speed-position switching control movement amount change register

Positioning complete signal [X14,X15,X16,X17]

M code ON signal (AFTER mode) [X4,X5,X6,X7]

Cd.7 M code OFF request

OPR complete flag

Md.31 Status: b4

Speed Position control control

Speed control carried out until speed-position switching signalturns ON

 

Position control movement amount is from the input position of

t6

the external speed-position switching signal

 

 

t5

t7

t2

Fig. 9.14 Operation timing and processing time during speed-position switching control (INC mode)

Normal timing time

 

 

 

 

 

Unit: ms

 

 

 

 

 

 

 

 

 

 

 

t1

t2

t3

t4

 

t5

t6

 

t7

 

1.1

0 to 1.8

0 to 1.8

2.7 to

4.4

0 to 1.8

1.0

 

Follows parameters

The t1 timing time could be delayed by the operation state of other axes.

9 - 85

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Mitsubishi Electronics QD75D, QD75P user manual Follows parameters