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94
Computing the Cycle Time
Section 2-7
Related Words
The average cycle time for the past eight cycles can be read from the CX-Pro-
grammer.
Note
The following methods are effective in reducing the cycle time.
• Place tasks that do not need to be executed on standby.
• Use JMP-JME instructions to skip instructions that do not need to be exe-
cuted.
2-7-4
I/O Refresh Times for PLC Units
CPM1A Unit I/O Refresh Times
Note
The I/O refresh time for CPU Unit built-in I/O is included in overhead process-
ing.
Name
Addresses
Description
Maximum Cycle
Time
A262 and
A263
These words contain the maximum cycle time in
increments of 0.1 ms. The time is updated every
cycle and is recorded in 32-bit binary (0 to FFFF
FFFF hex, or 0 to 429,496,729.5 ms). (A263 is
the leftmost word.)
Present Cycle Time
A264 and
A265
These words contain the present cycle time in
increments of 0.1 ms. The time is updated every
cycle and is recorded in 32-bit binary (0 to FFFF
FFFF, or 0 to 429,496,729.5 ms). (A265 is the
leftmost word.)
Name
Model
I/O refresh time per Unit
Expansion I/O Units
CPM1A-40EDR
0.39 ms
CPM1A-40EDT
0.39 ms
CPM1A-40EDT1
0.39 ms
CPM1A-40ETR1
0.18 ms
CPM1A-20EDT
0.18 ms
CPM1A-20EDT1
0.18 ms
CPM1A-16ER
0.25 ms
CPM1A-8ED
0.13 ms
CPM1A-8ER
0.08 ms
CPM1A-8ET
0.08 ms
CPM1A-8ET1
0.08 ms
Analog I/O Units
CPM1A-MAD01
0.29 ms
CPM1A-MAD11
0.32 ms
Temperature Sensor Units
CPM1A-TS001
0.25 ms
CPM1A-TS002
0.52 ms
CPM1A-TS101
0.25 ms
CPM1A-TS102
0.52 ms
DeviceNet I/O Link Unit
CPM1A-DRT21
0.38 ms
CompoBus/S I/O Link Unit
CPM1A-SRT21
0.21 ms
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...