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Index Registers
Section 4-15
Limitations when Using Index Registers
• It is only possible to read the Index Register for the last task executed
within the cycle from the CX-Programmer. If using Index Registers with
the same number to perform multiple tasks, it is only possible with the CX-
Programmer to read the Index Register value for the last task performed
within the cycle from the multiple tasks, nor is it possible to write the Index
Register value from the CX-Programmer.
• It is not possible to either read or write to the Index Registers using Host
Link commands or FINS commands.
• A setting can be made from the CX-Programmer to share Index Registers
between tasks. This setting will be enabled uniformly for all Index Regis-
ters and Data Registers.
Sharing Index Registers
The following setting can be made from the PLC Properties Dialog Box on the
CX-Programmer to control sharing Index and Data Registers between tasks.
Monitoring Index Registers
It is possible to monitor Index Registers as follows:
To use the Programming Devices to monitor the final Index Register values for
each task, or to monitor the Index Register values using Host Link commands
or FINS commands, write a program to store Index Register values from each
task to another area (e.g., DM area) at the end of each task, and to read Index
Register values from the storage words (e.g., DM area) at the beginning of
each task. The values stored for each task in other areas (e.g., DM area) can
then be edited using the CX-Programmer, Host Link commands, or FINS
commands.
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...