Mitsubishi Q00JCPU User Manual page 534

9
DEVICE EXPLANATION
(3) Precautions for using common pointers
9
9.9 Pointer (P)
- 83
9.9.2 Common pointer
(a) When the same pointer No. is used as label
The same pointer No. cannot be used again as a label.
Such use will result in a pointer configuration error (error code:4021).
(b) When the total number of local pointer points exceeds the first number of
common pointer
If the last number of local pointers used in several programs overlaps the first
number of common pointers, a "pointer configuration error (Error Code: 4020) will
occur.
Program A
P0 to P99 used in
program
P0 to P99 occupy
100 points
Diagram 9.83 Concept of common pointer using range
POINT
In the jump instruction, jumping to common pointers in other programs is not
allowed.
Common pointers should be used only with subroutine call instructions.
Program B
P0 to P99 used in P0 to P199 used
program in program
P0 to P99 occupy
P0 to P199 occupy
100 points 200 points
Total of 400 points used
Program C
All pointers after P400
can be used as
common pointers.