
B–63523EN–1/03
1. AXIS CONTROL
206
Function During synchronous
control
During composite
control
During superimposed
control
Acceleration/deceleration
control
The acceleration/decelera-
tion control for the master
axis is performed also for the
synchronous slave axes, but
different time constants are
used.
The acceleration/decelera-
tion control originally speci-
fied for one path is used also
for the other path, but differ-
ent time constants are used
(*3).
The move pulses that are ef-
fective after acceleration/de-
celeration for the superim-
posed control master axis
are added to those for the
slave axes.
Linear acceleration/decel-
eration after cutting feed in-
terpolation
Possible Possible Possible
Feedrate clamping The axes are clamped at the
feedrate of the master axis.
The axes in both paths are
clamped at the feedrate origi-
nally specified for one path
(*4).
The axes are clamped to the
feedrate specified for super-
imposed control.
Reference position return A reference position return is
possible for the master axis
unless it is in a parking state.
If the master axis is in a park-
ing state, only automatic ref-
erence position return (G28)
is possible for the master
axis. (⇒ Section 1.9.2.5)
A reference position return is
possible for axes not under
composite control. For axes
under composite control,
only an automatic reference
position return (G28) is pos-
sible.
Impossible for superimposed
control slave axes.
Second–, third–, or fourth–
reference position return
Possible (⇒ 1.9.2.5). Possible Impossible for superimposed
control slave axes.
Reference position return
check
Possible (⇒ 1.9.2.5). Possible Impossible for superimposed
control slave axes.
PMC axis control Possible for other than syn-
chronous slave axes.
Possible Possible
Polar coordinate interpola-
tion and cylindrical interpola-
tion
Possible Switching between indepen-
dent control and composite
control should be carried out
during cancel mode.
Possible
Handle interrupt Performed regardless of syn-
chronous control.
Possible for axes having
nothing to do with composite
control.
Performed regardless of su-
perimposed control (*5).
Mirror image Each signal originally be-
longing to a particular axis is
effective for that axis (*1).
Signals originally specified
for one path are effective for
the other path (*4).
Signals for the master axis
are effective as superim-
posed control pulses (*5).
Machine lock Each signal originally be-
longing to a particular axis is
effective for that axis (*1).
Signals originally specified
for one path are effective for
the other path (*4).
Signals for the master axis
are effective as superim-
posed control pulses (*5).
Restrictions imposed
during synchronous,
composite, and
superimposed control