9MAJOR POSITIONING CONTROL

9.1 Outline of major positioning controls

MELSEC-Q

"Major positioning controls" are carried out using the "positioning data" stored in the QD75.

The basic controls such as position control and speed control are executed by setting the required items in this "positioning data", and then starting that positioning data. The control system for the "major positioning controls" is set in setting item " Da.2 Control system" of the positioning data.

Control defined as a "major positioning control" carries out the following types of control according to the " Da.2 Control system" setting.

Position control

Major positioning control

 

 

 

Details

Da.2 Control system

 

 

 

 

 

 

1-axis linear

ABS Linear 1

Positioning of a designated 1 axis is carried out from the

 

start address (current stop position) to the designated

 

control

INC Linear 1

 

position.

 

 

 

 

2-axis linear

ABS Linear 2

Using a designated 2 axes, linear interpolation control is

 

interpolation

carried out from the start address (current stop position) to

 

INC Linear 2

 

control

the designated position.

Linear control

 

3-axis linear

ABS Linear 3

Using a designated 3 axes, linear interpolation control is

 

 

interpolation

carried out from the start address (current stop position) to

 

INC Linear 3

 

control

the designated position.

 

 

 

4-axis linear

ABS Linear 4

Using a designated 4 axes, linear interpolation control is

 

interpolation

carried out from the start address (current stop position) to

 

INC Linear 4

 

control

the designated position.

 

 

 

1-axis fixed-

 

Positioning of a designated 1 axis is carried out from the

 

Fixed-feed 1

start address (current stop position).

 

feed control

(The "

 

Current feed value" is set to "0" at the start.)

 

 

Md.20

 

 

 

 

 

 

 

 

2-axis fixed-

 

Using a designated 2 axes, linear interpolation control is

 

Fixed-feed 2

carried out from the start address (current stop position).

 

feed control

(The "

 

Current feed value" is set to "0" at the start.)

Fixed-feed

 

Md.20

 

 

 

 

 

 

 

 

 

Using a designated 3 axes, linear interpolation control is

control

3-axis fixed-

 

 

Fixed-feed 3

carried out from the start address (current stop position).

 

feed control

 

 

 

 

 

(The "

Md.20

Current feed value" is set to "0" at the start.)

 

 

 

 

 

 

 

 

 

 

Using a designated 4 axes, linear interpolation control is

 

4-axis fixed-

Fixed-feed 4

carried out from the start address (current stop position).

 

feed control

 

 

 

 

 

(The "

Md.20

Current feed value" is set to "0" at the start.)

 

 

 

 

 

 

 

 

 

 

Sub point

ABS Circular sub

The axis in which the interpolation control system is set is

 

designation

INC Circular sub

2-axis circular

regarded as the reference axis. Positioning is carried out in

 

ABS Circular right

interpolation

 

an arc path to a designated position, while controlling the

Center point

ABS Circular left

control

designation

INC Circular right

other axis (interpolation axis) to match the positioning data

 

set in the reference axis.

 

 

INC Circular left

 

 

 

 

 

Speed control

1-axis speed

Forward run speed 1

The speed control of the designated 1 axis is carried out.

control

Reverse run speed 1

 

2-axis speed

Forward run speed 2

The speed control of the designated 2 axes is carried out.

control

Reverse run speed 2

 

3-axis speed

Forward run speed 3

The speed control of the designated 3 axes is carried out.

control

Reverse run speed 3

 

4-axis speed

Forward run speed 4

The speed control of the 4 axes is carried out.

control

Reverse run speed 4

 

 

 

 

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Mitsubishi Electronics QD75P, QD75D user manual Outline of major positioning controls