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901
High-speed Counter/Pulse Output Instructions
Section 3-21
■
Independent Mode Positioning
When independent mode operation is started, pulse output will be continued
until the specified number of pulses has been output.
The deceleration point is calculated from the number of output pulses and
deceleration rate set in S and when that point is reached, the frequency is
decreased every pulse control period (4 ms) at the deceleration rate specified
in S until the specified number of points has been output, at which point pulse
output is stopped.
Note
1.
Pulse output will stop immediately if the CPU Unit is changed to PRO-
GRAM mode.
2.
The number of output pulses must be set each time output is restarted.
3.
The number of output pulses must be set in advance with PULS(881).
Pulses will not be output for ACC(888) if PULS(881) is not executed first.
4.
The direction set in the ACC(888) operand will be ignored if the number of
pulses is set with PULS(881) as an absolute value.
Stopping
pulse output
To stop
pulse out-
put
Immediate stop
Immediately stops
pulse output.
ACC(888)
(Continu-
ous)
↓
INI(880)
(Continu-
ous)
To stop
pulse out-
put
Immediate stop
Immediately stops
pulse output.
ACC(888)
(Continu-
ous)
↓
SPED(885)
(Continu-
ous, target
frequency of
0)
To stop
pulse out-
put
smoothly
Decelerating to a
stop
Decelerated pulse
output to a stop.
Note
If the target
frequency of
the second
ACC(888)
instruction is
0 Hz, the
deceleration
rate from the
first
ACC(888)
instruction
will be used.
ACC(888)
(Continu-
ous)
↓
ACC(888)
(Continu-
ous, target
frequency of
0)
Operation
Purpose
Application
Frequency changes
Description
Procedure/
instruction
Pulse frequency
Present frequency
Execution of ACC(888) Execution of INI880)
Time
Pulse frequency
Present frequency
Execution of ACC(888)
Execution of SPED(885)
Time
Pulse frequency
Present frequency
Execution of ACC(888)
Execution of ACC(888)
Time
Acceleration/deceleration rate
(value set when starting)
Target frequency = 0
Summary of Contents for SYSMAC CS1D-CPU**
Page 3: ...iv...
Page 29: ...xxx...
Page 185: ...146 List of Instructions by Function Code Section 2 4...
Page 1389: ...1350 CJ series Instruction Execution Times and Number of Steps Section 4 2...
Page 1390: ...1351 Appendix A ASCII Code Table ASCII SP Four leftmost bits Four rightmost bits...
Page 1391: ...1352 ASCII Code Table Appendix A...