Appendix 3.3.3 Program Replacement Examples - Mitsubishi Electric melsec q00ujcpu User Manual

Appendix 3.3.3
Program replacement examples
This section shows program replacement examples for the instructions of which replacement programs
are available in Appendix 3.3. (Skip this section if instructions listed in Appendix 3.3.1 are not used.)
(1) Replacement example of the IX and IXEND instructions
Since index registers are saved using the ZPUSH instruction, a 23-word index register save area is required.
(a) Example of device assignment
Before replacement
Application
Index modification table
If the device numbers in the example above are used for other applications, assign unused device numbers
instead.
(b) Program before replacement
TableApp.28 Example of device assignment
Device
D100 to D115 Index modification table
Index register save area
Figure App.1 Sample program
After replacement
Application
D100 to D115
D200 to D222
The modification value set in the
index modification table is added.
Modification target
(No change required)
APPENDICES
1
2
3
Device
APPEN-
DIX
6
7
8
App - 26