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Interrupt Functions
Section 5-1
Scheduled Interrupt Interval Setting
Note
(1) Set a scheduled interrupt time (interval) that is longer than the time re-
quired to execute the corresponding interrupt task.
(2) If the scheduled time interval is too short, the scheduled interrupt task will
be executed too frequently, which may cause a long cycle time and ad-
versely affect the cyclic task processing.
(3) If an interrupt task is being executed for another interrupt (input interrupt,
high-speed counter interrupt, or external interrupt) when the scheduled
interrupt occurs, the scheduled interrupt will not be executed until the oth-
er interrupt task is completed.
When different kinds of interrupts are being used, design the program to
handle multiple interrupts smoothly. Even if two interrupts occur at the
same time, the scheduled interrupts will continue as programmed, so the
scheduled interrupt tasks will continue to occur at the scheduled times
even if specific scheduled interrupts are delayed.
Writing the Ladder
Program
MSKS(690) Settings
The MSKS(690) instruction must be executed in order to use the scheduled
interrupt. The settings made with MSKS(690) are enabled with just one exe-
cution, so in general execute MSKS(690) in just one cycle using an up-differ-
entiated condition.
@MSKS(690)
N
S
Execution condition
Specifies scheduled interrupt 0 (interrupt task 2).
Sets the scheduled interrupt time interval and
starts timing.
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...