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9 MAJOR POSITIONING CONTROL
9.1 Outline of major positioning controls
Major positioning control
1-axis linear
control
2-axis linear
interpolation
control
Linear control
3-axis linear
interpolation
control
4-axis linear
interpolation
control
1-axis fixed-
feed control
2-axis fixed-
feed control
Fixed-feed
control
3-axis fixed-
feed control
4-axis fixed-
feed control
Sub point
designation
2-axis circular
interpolation
Center point
control
designation
1-axis speed
control
2-axis speed
control
Speed control
3-axis speed
control
4-axis speed
control
"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.
Da.2 Control system
ABS Linear 1
INC Linear 1
ABS Linear 2
INC Linear 2
ABS Linear 3
INC Linear 3
ABS Linear 4
INC Linear 4
Fixed-feed 1
Fixed-feed 2
Fixed-feed 3
Fixed-feed 4
ABS Circular sub
INC Circular sub
ABS Circular right
ABS Circular left
INC Circular right
INC Circular left
Forward run speed 1
Reverse run speed 1
Forward run speed 2
Reverse run speed 2
Forward run speed 3
Reverse run speed 3
Forward run speed 4
Reverse run speed 4
Positioning of a designated 1 axis is carried out from the
start address (current stop position) to the designated
position.
Using a designated 2 axes, linear interpolation control is
carried out from the start address (current stop position) to
the designated position.
Using a designated 3 axes, linear interpolation control is
carried out from the start address (current stop position) to
the designated position.
Using a designated 4 axes, linear interpolation control is
carried out from the start address (current stop position) to
the designated position.
Positioning of a designated 1 axis is carried out from the
start address (current stop position).
(The "
Md.20
Current feed value" is set to "0" at the start.)
Using a designated 2 axes, linear interpolation control is
carried out from the start address (current stop position).
(The "
Md.20
Current feed value" is set to "0" at the start.)
Using a designated 3 axes, linear interpolation control is
carried out from the start address (current stop position).
(The "
Md.20
Current feed value" is set to "0" at the start.)
Using a designated 4 axes, linear interpolation control is
carried out from the start address (current stop position).
(The "
Md.20
Current feed value" is set to "0" at the start.)
The axis in which the interpolation control system is set is
regarded as the reference axis. Positioning is carried out in
an arc path to a designated position, while controlling the
other axis (interpolation axis) to match the positioning data
set in the reference axis.
The speed control of the designated 1 axis is carried out.
The speed control of the designated 2 axes is carried out.
The speed control of the designated 3 axes is carried out.
The speed control of the 4 axes is carried out.
9 - 2
MELSEC-Q
Details
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