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Pulse Outputs
Section 5-3
Pulse Output Modes
There are two pulse output modes. In independent mode the number of out-
put pulses is specified and in continuous mode the number of output pulses is
not specified.
Frequency acceleration and decel-
eration rates
Set in 1 Hz units for acceleration/deceleration rates from 1 Hz to 65,635 Hz (every 4
ms). The acceleration and deceleration rates can be set independently only with
PLS2(887).
Changing SVs during instruction
execution
The target frequency, acceleration/deceleration rate, and target position can be
changed.
Duty factor
Fixed at 50%
Pulse output method
CW/CCW inputs or Pulse + direction inputs
The method is selected with an instruction operand. The same method must be used
for pulse outputs 0 and 1.
Number of output pulses
Relative coordinates: 00000000 to 7FFFFFFF hex
(Each direction accelerating or decelerating: 2,147,483,647)
Absolute coordinates: 80000000 to 7FFFFFFF hex
(
−
2147483648 to 2147483647)
Pulse output PV's relative/absolute
coordinate specification
Absolute coordinates are specified automatically when the origin location has been
determined by setting the pulse output PV with INI(880) or performing an origin
search with ORG(889). Relative coordinates are used when the origin location is
undetermined.
Relative pulse specification/
Absolute pulse specification
The pulse type can be specified with an operand in PULS(886) or PLS2(887).
Note The absolute pulse specification can be used when absolute coordinates are specified for
the pulse output PV, i.e. the origin location has been determined.
The absolute pulse specification cannot be used when relative coordinates are specified,
i.e. the origin location is undetermined. An instruction error will occur.
Pulse output PV's storage location The following Auxiliary Area words contain the pulse output PVs:
Pulse output 0: A277 (leftmost 4 digits) and A276 (rightmost 4 digits)
Pulse output 1: A279 (leftmost 4 digits) and A278 (rightmost 4 digits)
Pulse output 2: A323 (leftmost 4 digits) and A322 (rightmost 4 digits)
Pulse output 3: A325 (leftmost 4 digits) and A324 (rightmost 4 digits)
The PVs are refreshed during regular I/O refreshing.
Acceleration/deceleration curve
specification
Trapezoidal or S-curve acceleration/deceleration
Item
Specifications
Mode
Description
Independent mode
This mode is used for positioning.
Operation stops automatically when the preset num-
ber of pulses has been output. It is also possible to
stop the pulse output early with INI(880).
Continuous mode
This mode is used for speed control.
The pulse output will continue until it is stopped by
executing another instruction or switching the PLC to
PROGRAM mode.
Summary of Contents for CP1H-CPU - 05-2006
Page 2: ...CP1H X40D CP1H XA40D CP1H Y20DT D CP1H CPU Unit Operation Manual Revised May 2006...
Page 3: ...iv...
Page 11: ...xii TABLE OF CONTENTS...
Page 15: ...xvi...
Page 19: ...xx...
Page 31: ...xxxii Conformance to EC Directives 6...
Page 71: ...40 Function Blocks Section 1 5...
Page 133: ...102 Computing the Cycle Time Section 2 7...
Page 169: ...138 CPM1A Expansion I O Unit Wiring Section 3 6...
Page 411: ...380 Clock Section 6 8...
Page 519: ...488 Replacing User serviceable Parts Section 10 2...
Page 527: ...496 Standard Models Appendix A...
Page 535: ...504 Dimensions Diagrams Appendix B...
Page 628: ...597 Connections to Serial Communications Option Boards Appendix F Connecting to Unit...
Page 629: ...598 Connections to Serial Communications Option Boards Appendix F...
Page 659: ...628 PLC Setup Appendix G...
Page 665: ...634 Index work words 159 write protection 370...
Page 667: ...636 Revision History...