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6 POSITIONING CONTROL
6.12 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 specified 3 axes.
Fixed-pitch feed control using 3 axes linear interpolation uses the FEED-3 servo
instruction.
Items are set in peripheral devices
Common Arc Parameter block Others
Servo
instruction
Positioning
method
Number of
control axes
Parameter block No.
Axis
Address/travel value
Command s
p
eed
Dwell time
M-code
Tor
q
ue limit value
Auxiliar
y
p
oint
Radius
Central
p
oint
Control unit
S
p
eed limit value
Acceleration time
Deceleration time
Ra
p
id sto
p
deceleration time
Tor
q
ue limit value
Deceleration
p
rocessin
g
on sto
p
in
p
ut
Allowable error ran
g
e for circular inter
p
olation
S-curve ratio
Cancel
WAIT-ON/OFF
Speed change
FEED-3
Incremental 3
Valid
: Must be set
: Set if required
[Control details]
(1) Positioning control from the current stop position "0" to the position which
combined travel direction and travel value specified with each axis is executed.
(2) The travel direction for each axis is set by the sign (+/ -) of the travel value for
each axis, as follows:
• Positive travel value .............Positioning control to forward direction
(Address increase direction)
• Negative travel value............Positioning control to reverse direction
(Address decrease direction)
Z-axis
travel value
Forward direction
Forward direction
Positioning direction
X-axis travel value
Y-axis
travel value
Forwar
directi
o
Reverse direction
Reverse direction
Reverse direction
V
t
Operation timing
Command speed
Servo program start
: Indicates setting data
(Note)
Fixed-pitch feed by FEED-3 instruction
Fig. 6.25 Fixed-pitch feed control using 3 axes linear interpolation