10 HIGH-LEVEL POSITIONING CONTROL

10.6.2 Example of a start program for high-level positioning control

MELSEC-Q

The following shows an example of a start program for high-level positioning control in which the 1st point " block start data" of axis 1 is started. (The block No. is regarded as "7000".)

Control data that require setting

The following control data must be set to execute high-level positioning control. The setting is carried out using a sequence program.

 

 

 

 

Setting

 

Buffer memory address

 

 

 

Setting item

Setting details

 

 

 

 

 

 

 

Axis

Axis

Axis

Axis

 

 

 

value

 

 

 

 

 

1

2

3

4

 

 

 

 

 

 

 

 

 

Positioning start

7000

Set "7000" to indicate control using " block start

1500

1600

1700

1800

 

Cd.3

 

 

 

No.

 

data".

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Positioning starting

 

Set the point No. of the " block start data" to be

 

 

 

 

 

Cd.4

1

1501

1601

1701

1801

 

 

 

point No.

 

started.

 

 

 

 

 

 

 

 

 

 

 

Refer to Section 5.7 "List of control data" for details on the setting details.

Start conditions

The following conditions must be fulfilled when starting the control. The required conditions must also be integrated into the sequence program, and configured so the control does not start unless the conditions are fulfilled.

 

 

 

 

 

Device

 

 

Signal name

 

Signal state

 

 

 

 

 

 

 

Axis

Axis

 

Axis

Axis

 

 

 

 

1

2

 

3

4

 

 

 

 

 

 

 

 

 

PLC READY signal

ON

PLC CPU preparation completed

 

Y0

 

 

 

 

 

 

 

 

 

 

QD75 READY signal

ON

QD75 preparation completed

 

X0

 

 

Synchronization flag

ON

QD75 buffer memory

 

X1

 

Interface

The access is possible.

 

 

Axis stop signal

OFF

Axis stop signal is OFF

Y4

Y5

 

Y6

Y7

signal

 

 

 

 

 

 

 

 

Start complete signal

OFF

Start complete signal is OFF

X10

X11

 

X12

X13

 

 

 

 

 

 

 

 

 

 

 

 

BUSY signal

OFF

BUSY signal is OFF

XC

XD

 

XE

XF

 

Error detection signal

OFF

There is no error

X8

X9

 

XA

XB

 

M code ON signal

OFF

M code ON signal is OFF

X4

X5

 

X6

X7

 

 

 

 

 

 

 

 

 

 

Drive unit READY signal

ON

Drive unit preparation completed

 

 

 

 

 

 

 

 

 

 

 

External

Stop signal

OFF

Stop signal is OFF

 

 

 

signal

Upper limit (FLS)

ON

Within limit range

 

 

 

 

Lower limit (RLS)

ON

Within limit range

 

 

 

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Mitsubishi Electronics QD75P, QD75D user manual Control data that require setting, Start conditions