Fixed-Pitch Feed Control Using 3-Axes Linear Interpolation - Mitsubishi Electric A173UHCPU Programming Manual

7. POSITIONING CONTROL
7.11

Fixed-Pitch Feed Control Using 3-Axes Linear Interpolation

Servo Positioning
Instruction Method
FEED-3
Incremental
[Control Details]
Positioing direction
Forward direction
Forward
direction
Z-axis
travel value
Reverse
direction
Reverse
direction
Fig.7.25 Fixed-Pitch Feed Control Using 3-Axes Linear Interpolation
Fixed-pitch feed control using 3-axes linear interpolation from the current stop
position with the 3-axes designated in the sequence program positioning
commands.
Fixed-pitch feed control using 3-axes linear interpolation uses the FEED-3 servo
instruction.
Common
Number of
Controllable
Axes
∆
! ! !
3
(1) Positioning control from the current stop position (0) to the position which is the
resultant of the designated travel directions and travel values of the respective
axes.
(2) The travel direction is designated by the sign of the travel value, as follows:
• Positive travel value ..........forward direction (increased address)
• Negative travel value.........reverse direction (decreased address)
Commanded
speed
Y-axis
travel value
Forward
direction
X-axis
travel value
Reverse
direction
Items Set by Peripherals
Arc
∆ ∆ ∆
Operation timing
V
Fixed-pitch feed using
FEED-3 instruction
Commanded
speed
SVST
instruction
7 − 57
Parameter Block
∆ ∆ ∆ ∆ ∆ ∆
: indicates set data
Others
∆ ∆ ∆
OK
! : Must be set
∆ : Set if required
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