9 MAJOR POSITIONING CONTROL

MELSEC-Q

Setting method for the current value changing function

The following shows an example of a sequence program and data setting to change the current value to a new value with the positioning start signal. (The

"

Md.20

Current feed value is changed to "5000.0m" in the example shown.)

(1)Set the following data.

(Set with the sequence program shown in (3), while referring to the start time chart shown in (2).)

 

Setting item

Setting

 

Setting details

Buffer memory address

 

value

 

Axis 1

Axis 2

Axis 3

Axis 4

 

 

 

 

 

Cd.3

Positioning start No.

9003

Set the start No. "9003" for the new current value.

1500

1600

1700

1800

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1506

1606

1706

1806

Cd.9

Current value changing

50000

Set the new "

Md.20

Current feed value".

1507

1607

1707

1807

 

 

 

 

 

 

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

(2) The following shows a start time chart.

V

Start of data No. 9003

t

Positioning start signal

[Y10]

PLC READY signal

[Y0]

QD75 READY signal

[X0]

Start complete signal

[X10]

BUSY signal

[XC]

Positioning complete signal

[X14]

Error detection signal

[X8]

Md.20 Current feed value Cd.3 Positioning start No. Cd.9 Current value changing

 

Address during positioning execution

50000

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Data No. during positioning execution

9003

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

50000

Fig. 9.21 Changing to a new current value using the start No. (No. 9003) for a current value changing

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Image 408
Mitsubishi Electronics QD75P Setting method for the current value changing function, Following shows a start time chart