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93
Computing the Cycle Time
Section 2-7
2-7-3
Functions Related to the Cycle Time
Minimum Cycle Time
Set the minimum cycle time to a non-zero value to eliminate inconsistencies in
I/O responses. A minimum cycle time can be set in the PLC Setup between 1
and 32,000 ms in 1-ms increments.
This setting is effective only when the actual cycle time is shorter than the
minimum cycle time setting. If the actual cycle time is longer than the mini-
mum cycle time setting, the actual cycle time will remain unchanged.
PLC Setup
Watch Cycle Time
If the cycle time exceeds the watch (maximum) cycle time setting, the Cycle
Time Too Long Flag (A401.08) will be turned ON and PLC operation will be
stopped.
PLC Setup
Related Flags
Cycle Time
Monitoring
The maximum cycle time is stored in A262 and A263 and the present cycle
time is stored in A264 and A265 every cycle.
Minimum cycle time
(effective)
Minimum cycle time
(effective)
Minimum cycle time
(effective)
Actual cycle
time
Actual cycle
time
Actual cycle
time
Minimum cycle time
Actual cycle
time
Minimum cycle time
Actual cycle
time
Minimum cycle time (effective)
Actual cycle
time
Name
Settings
Default
Minimum cycle time
0000 to 7D00 hex
(1 to 32,000 ms in 1-ms incre-
ments)
0000 hex: Variable cycle time
Name
Settings
Default
Enable Watch Cycle
Time Setting
0: Default (1 s)
1: User setting
0000 hex: Watch cycle time of
1 s
Watch Cycle Time
001 to FA0: 10 to 40,000 ms
(10-ms increments)
Name
Address
Description
Cycle Time Too Long
Flag
A401.08
Turns ON if the present cycle time exceeds the
Watch Cycle Time set in the PLC Setup.
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...