General Pointers; Local Pointers - Mitsubishi Electric M800VW Series Programming Manual

M800V/M80V Series PLC Programming Manual (1/2)
4 Explanation of Devices
4.4 Detailed Explanation of Devices

4.4.14.1 General Pointers

General pointers are pointer which can be used only with the independent program method, which lays importance on
compatibility with conventional models.
The general pointer can be used with the jump instructions and subroutine call instructions. The same pointer No. cannot be
used.

4.4.14.2 Local Pointers

Local pointers are pointers that can be used only with the multi-program method.
 What is a local pointer?
 A local pointer is a pointer that can be used independently with each program stored in the CNC controller. The local
pointer can be used with the jump instructions and subroutine call instructions.
The jump instructions and subroutine call instructions cannot be used for local pointers of other programs.
 The same pointer No. can be used in each program.
The pointers from P0 to the common pointer usage range setting value (the details described below) can be used.
Program A
P0
 Concept of number of local pointer points
The local pointers split and use the local pointer area (arbitrarily settable with user settings) in all programs. Up to the
maximum No. of local pointers in use can be used in each program. When using the local pointers in multiple programs, start
use from P0.
An error will occur if the total of local pointers used in each program exceeds the setting number.
Program A
Use P0 to P99 Use P100 to P199
in the program in the program
200 points from P0 to
100 points from P0 to
P199 are occupied
P99 are occupied
When P0 to P99 are
used, only 100
points are occupied.
CALL P0
FEND
P0
RET
END
Program C
Program B
Use only P249
in the program
250 points from P0 to
P249 are occupied
When P0 is
used, only one
point is occupied.
Program B
CALL P0
FEND
RET
END
Total of 550 points
are used
51
The same pointer
can be used.
IB-1501667-B