Omron CP - PROGRAMMING MANUAL 05-2007 - Page 768

735
High-speed Counter/Pulse Output Instructions Section 3-20
Chang-
ing set-
tings
To
change
speed
smoothly
(with
unequal
acceler-
ation
and
deceler-
ation
rates)
Changing the
target speed
(frequency)
during position-
ing
(different accel-
eration and
deceleration
rates)
PLS2(887) can be
executed during
positioning to
change the acceler-
ation rate, decelera-
tion rate, and target
frequency.
Note To prevent the
target posi-
tion from
being
changed
intentionally,
the original
target posi-
tion must be
specified in
absolute coor-
dinates.
PLS2(887)
↓
PLS2(887)
PULS(886)
↓
ACC(888)
(Indepen-
dent)
↓
PLS2(887)
To
change
target
position
Changing the
target position
during position-
ing (multiple
start function)
PLS2(887) can be
executed during
positioning to
change the target
position (number of
pulses), accelera-
tion rate, decelera-
tion rate, and target
frequency.
Note If a constant
speed cannot
be main-
tained after
changing the
settings, an
error will
occur and the
original opera-
tion will con-
tinue to the
original target
position.
PLS2(887)
↓
PLS2(887)
PULS(886)
↓
ACC(888)
(Indepen-
dent)
↓
PLS2(887)
Opera-
tion
Purpose Application Frequency changes Description Procedure/
instruction
Pulse
frequency
Changed target
frequency
Target frequency
Specified number of
pulses (Specified with
PULS(886).)
Acceleration/
deceleration
rate
Execution of
ACC(888)
(independent
mode)
PLS2(887) executed to change
the target frequency and accel-
eration/deceleration rates.
(The target position is not
changed. The original target
position is specified again.)
Time
Execution of
PLS2(887)
PLS2(887) executed to
change the target position.
(The target frequency and
acceleration/deceleration
rates are not changed.)
Pulse
frequency
Target
frequency
Acceleration/
deceleration
rate
Specified
number of
pulses
Number of pulses
changed with
PLS2(887).
Time