889
High-speed Counter/Pulse Output Instructions Section 3-21
Description PULS(886) sets the pulse type and number of pulses specified in T and N for
the port specified in P. Actual output of the pulses is started later in the pro-
gram using SPED(885) or ACC(888) in independent mode.
Flags
Precautions • An error will occur if PULS(886) is executed when pulses are already
being output. Use the differentiated version (@PULS(886)) of the instruc-
tion or an execution condition that is turned ON only for one scan to pre-
vent this.
• The calculated number of pulses output for PULS(886) will not change
even if INI(880) is used to change the PV of the pulse output.
• The direction set for SPED(885) or ACC(888) will be ignored if the num-
ber of pulses is set with PULS(881) as an absolute value.
• It is possible to move outside of the range of the PV of the pulse output
amount (
−2,147,483,648 to 2,147,483,647).
Example When CIO 000000 turns ON in the following programming example,
PULS(886) sets the number of output pulses for pulse output 0. An absolute
value of 5,000 pulses is set. SPED(885) is executed next to start pulse output
using the CW/CCW method in the clockwise direction in independent mode at
a target frequency of 500 Hz.
Index Registers --- --- ---
Indirect addressing
using Index Registers
--- --- ,IR0 to ,IR15
–2048 to +2047 ,IR0 to
–2048 to +2047 ,IR15
DR0 to DR15, IR0 to
IR15
,IR0+(++) to ,IR15+(++)
,–(– –)IR0 to, –(– –)IR15
Area P T N
Name Label Operation
Error Flag ER ON if the specified range for P, T, or N is exceeded.
ON if PULS(886) is executed for a port that is already out-
putting pulses.
ON if PULS(886) is executed in an interrupt task when an
instruction controlling pulse output is being executed in a
cyclic task.
@PULS
#0000
#0000
D00100
000000
@SPED
#0000
#0001
D00110
1388
0000
D00100
D00101
01F4
0000
D00110
D00111
Number of output pulses: 5,000
Target frequency: 500 Hz
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