Omron CP1H CPU UNITS - PROGRAMMING 05-2007, Operation Manual

Page: 275 / 788

241
Pulse Outputs
Section 5-3
Independent Mode (Positioning)
Starting a Pulse Output
Note Triangular Control
If the specified number of pulses is less than the number required just to
reach the target frequency and return to zero, the function will automatically
reduce the acceleration/deceleration time and perform triangular control
(acceleration and deceleration only.) An error will not occur.
Operation Example
application
Frequency changes Description Procedure
Instruction Settings
Output with
specified
speed Positioning
without accel-
eration or
deceleration Starts outputting
pulses at the speci-
fied frequency and
stops immediately
when the specified
number of pulses
has been output.
Note The target
position
(specified
number of
pulses) can-
not be
changed dur-
ing position-
ing.
PULS(886)
↓
SPED(885)
•Number
of pulses
•Relative
or abso-
lute pulse
specifica-
tion
•Port
•“CW/
CCW” or
“Pulse +
direction”
•Indepen-
dent
•Target fre-
quency
Simple trap-
ezoidal con-
trol Positioning
with trapezoi-
dal accelera-
tion and
deceleration
(Same rate
used for
acceleration
and decelera-
tion; no start-
ing speed)
The number
of pulses can-
not be
changed dur-
ing position-
ing. Accelerates and
decelerates at the
same fixed rate and
stops immediately
when the specified
number of pulses
has been output.
(See note.)
Note The target
position
(specified
number of
pulses) can-
not be
changed dur-
ing position-
ing.
PULS(886)
↓
ACC(888)
(Indepen-
dent)
•Number
of pulses
•Relative
or abso-
lute pulse
specifica-
tion
•Port
•“CW/
CCW” or
“Pulse +
direction”
•Indepen-
dent
•Accelera-
tion and
decelera-
tion rate
•Target fre-
quency
Complex
trapezoidal
control Positioning
with trapezoi-
dal accelera-
tion and
deceleration
(Separate
rates used for
acceleration
and decelera-
tion; starting
speed)
The number
of pulses can
be changed
during posi-
tioning. Accelerates and
decelerates at a
fixed rates. The
pulse output is
stopped when the
specified number of
pulses has been
output. (See note.)
Note The target
position
(specified
number of
pulses) can
be changed
during posi-
tioning.
PLS2(887) •Number
of pulses
•Relative
or abso-
lute pulse
specifica-
tion
•Port
•“CW/
CCW” or
“Pulse +
direction”
•Accelera-
tion rate
•Decelera-
tion rate
•Target fre-
quency
•Starting
frequency
Pulse frequency
Target
frequency
Specified number of
pulses (Specified with
PULS(886).)
Execution of
SPED(885)
Outputs the specified
number of pulses
and then stops.
Time
Pulse frequency
Target
frequency
Specified number of
pulses (Specified
with PULS(886).)
Acceleration/
deceleration
rate
Execution of
ACC(888)
Outputs the specified
number of pulses and
then stops.
Time
Pulse frequency
Target
frequency
Starting
frequency
Acceler-
ation
rate
Specified number
of pulses
Deceleration
rate
Execution of
PLS2(887) Target
frequency
reached.
Deceleration point
Output stops.
Stop
frequency
Time