Manual

2-335
2 Instructions
CP1E CPU Unit Instructions Reference Manual(W483)
High-speed Counter/Pulse
Output Instructions
2
ACC
Note Triangular Control
If the specified number of pulses is less than the number required 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.
Sample program
When CIO 0.00 turns ON in the following programming example, ACC(888) starts pulse output from
pulse output 0 in continuous mode in the clockwise direction using the pulse + direction method. Pulse
output is accelerated at a rate of 20 Hz every 4 ms until the target frequency of 500 Hz is reached.
When CIO 0.01 turns ON, ACC(888) changes to an acceleration rate of 10 Hz every 4 ms until the tar-
get frequency of 1,000 Hz is reached.
Stopping
pulse out-
put, con-
tinued
To stop
pulse out-
put
smoothly.
(Number of
pulses set-
ting is not
preserved.)
Decelerating to a
stop
Decelerates the pulse
output to a stop.
Note If ACC(888) started
the operation, the
original accelera-
tion/deceleration
rate will remain in
effect.
If SPED(885)
started the opera-
tion, the accelera-
tion / deceleration
rate will be invalid
and the pulse out-
put will stop imme-
diately.
PULS(886)
↓
ACC(888) or
SPED(885)
(Independent)
↓
ACC(888)
(Independent,
independent,
target fre-
quency of 0)
PLS2(887)
↓
ACC(888)
(Independent,
target fre-
quency of 0)
Opera-
tion
Purpose Application Frequency changes Description
Procedure/
instruction
Pulse frequency
Present
frequency
Target
frequency = 0
Execution of
ACC(888)
Deceleration rate
Time
Execution of
PLS2(887)
Pulse frequency
Target
frequency
Specified number
of pulses
(Specified with
PULS(886).)
Execution of
ACC(888)
Time
0014
01F4
0000
D100
D101
D102
000A
03E8
0000
D105
D106
D107
@ACC
#0000
#0100
D100
0.00
@ACC
#0000
#0100
D105
0.01
500 Hz
10 Hz / 4 ms
20 Hz/4 ms
1000 Hz
Direction: CW in continuous mode
Pulse output: 0
Pulse output method:
Pulse + direction output
Direction: CW in continuous mode
Pulse output: 0
Pulse output method:
Pulse + direction output
Target frequency: 500 Hz
Acceleration/deceleration rate: 20 Hz
Target frequency: 1,000 Hz
Acceleration/deceleration rate: 10 Hz
Time
Target frequency
Pulse frequency
ACC(888) executed.
ACC(888) executed.