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Pulse Outputs
Section 5-3
2.
Changing the Pulse Output PV
When you want to set the current position as the origin, execute INI(880)
to reset the pulse output PV to 0.
The origin location can be determined after using either method.
The CP1H CPU Units are also equipped with the origin return function, which
can be executed to return the system to the origin after the origin location has
been determined by one of the methods above.
• Origin Return
If the motor is stopped, ORG(889) can be executed to perform an origin
return operation that moves the motor back to the origin position. The ori-
gin position must be determined in advance by performing an origin
search or changing the pulse output PV.
Note The motor can be moved even if the origin position has not been determined,
but positioning operations will be limited as follows:
• Origin return: Cannot be used.
• Positioning with absolute pulse specification: Cannot be used.
• Positioning with relative pulse specification: Outputs the specified number
of pulses after setting the current position to 0.
5-3-5-1
Origin Search
When ORG(889) executes an origin search, it outputs pulses to actually move
the motor and determines the origin position using the input signals that indi-
cate the origin proximity and origin positions.
The input signals that indicate the origin position can be received from the
servomotor's built-in phase-Z signal or external sensors such as photoelectric
sensors, proximity sensors, or limit switches.
Several origin search patterns can be selected.
In the following example, the motor is started at a specified speed, acceler-
ated to the origin search high speed, and run at that speed until the origin
proximity position is detected. After the Origin Proximity Input is detected, the
motor is decelerated to the origin search low speed and run at that speed until
the origin position is detected. The motor is stopped at the origin position.
Pulse frequency
Origin search
initial speed
Origin search
acceleration rate
Origin search
high speed
Deceleration
point
Origin search
deceleration rate
Origin search
proximity speed
Start
Execution of ORG(889)
Decelerate from high to low speed.
Indicated by the Origin
Proximity Input Signal
Stop
Indicated by the
Origin Input Signal
Time
Содержание CP1H-CPU - 05-2006
Страница 1: ...OPERATION MANUAL CP1H CPU Unit SYSMAC CP Series CP1H X40D CP1H XA40D CP1H Y20DT D Cat No W450 E1 02...
Страница 2: ...CP1H X40D CP1H XA40D CP1H Y20DT D CP1H CPU Unit Operation Manual Revised May 2006...
Страница 3: ...iv...
Страница 11: ...xii TABLE OF CONTENTS...
Страница 15: ...xvi...
Страница 19: ...xx...
Страница 31: ...xxxii Conformance to EC Directives 6...
Страница 71: ...40 Function Blocks Section 1 5...
Страница 133: ...102 Computing the Cycle Time Section 2 7...
Страница 169: ...138 CPM1A Expansion I O Unit Wiring Section 3 6...
Страница 411: ...380 Clock Section 6 8...
Страница 519: ...488 Replacing User serviceable Parts Section 10 2...
Страница 527: ...496 Standard Models Appendix A...
Страница 535: ...504 Dimensions Diagrams Appendix B...
Страница 628: ...597 Connections to Serial Communications Option Boards Appendix F Connecting to Unit...
Страница 629: ...598 Connections to Serial Communications Option Boards Appendix F...
Страница 659: ...628 PLC Setup Appendix G...
Страница 665: ...634 Index work words 159 write protection 370...
Страница 667: ...636 Revision History...