Omron CP - PROGRAMMING MANUAL 05-2007 - Page 760

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High-speed Counter/Pulse Output Instructions Section 3-20
(4) The direction set in the SPED(885) operand will be ignored if the number
of pulses is set with PULS(881) as an absolute value.
Operation Purpose Application Frequency changes Description Procedure/
instruction
Starting
pulse out-
put
To out-
put with
speci-
fied
speed
Positioning
without
accelera-
tion or
deceleration
Starts outputting
pulses at the
specified fre-
quency and stops
immediately when
the specified num-
ber of pulses has
been output.
Note The target
position
(specified
number of
pulses) can-
not be
changed
during posi-
tioning.
PULS(886)
↓
SPED(885)
(Indepen-
dent)
Changing
settings
To
change
speed in
one step
Changing
the speed in
one step
during oper-
ation
SPED(885) can
be executed dur-
ing positioning to
change (raise or
lower) the pulse
output frequency
in one step.
The target position
(specified number
of pulses) is not
changed.
PULS(886)
↓
SPED(885)
(Indepen-
dent)
↓
SPED(885)
(Indepen-
dent)
Stopping
pulse out-
put
To st o p
pulse
output
(Num-
ber of
pulses
setting is
not pre-
served.)
Immediate
stop
Stops the pulse
output immedi-
ately and clears
the number of out-
put pulses setting.
PULS(886)
↓
SPED(885)
(Indepen-
dent)
↓
INI(880)
PLS2(887)
↓
INI(880)
Stop
pulse
output
(Num-
ber of
pulses
setting is
not pre-
served.)
Immediate
stop
Stops the pulse
output immedi-
ately and clears
the number of out-
put pulses setting.
PULS(886)
↓
SPED(885)
(Indepen-
dent)
↓
SPED(885),
(Indepen-
dent, Target
frequency of
0Hz)
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
New target
frequency
Original target
frequency
Specified number
of pulses
(Specified with
PULS(886).)
Number of pulses
specified with
PULS(886) does
not change.
Execution of SPED(885)
(independent mode)
SPED(885) (independent
mode) executed again to
change the target
frequency. (The target
position is not changed.)
Time
Pulse frequency
Present
frequency
Execution of
SPED(885)
Execution of
INI(880)
Time
Pulse frequency
Present frequency
Execution of
SPED(885)
Execution of
SPED(885)
Time