Yaskawa J50M Instructions User Manual

Page 106

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2.11.4 OVERVIEW OF USER MACRO BODY (Cent’d)

operation Commands

A .

B .

(3)

Arithmetical operations ( +, -, *, / , “ )

Functional operations (SIN, COS, ROUND, . ..)

Control

Commands

Branch command (IF <qualification

GOTO n)

Repeat command (WHILE <qualification

DO m)

Using these commands, a program which requires

complicated operations and conditional judgments can
be written in the general format. The feature of user
macro is to enable the programming of a wide range of
NC functions from a simple machining cycle which is
rather a subprogram to a special, complicated canned
cycle, and the storing of these cycles in the machine.

Described below are details of the commands mentioned
above.

Main Program

G65

2.11.5 VARIABLES

Instead of directly assigning a value to an address in a
user macro body, the address can be designated by a

variable. When this variable is

during execution,

the corresponding value is searched from the variable
area to provide the address value.

There are three types of variables: local

variable,

common variable, and system variable.

Each is identifiable by a variable number.

To the local variables, real numbers can be

. .

assigned using the argument

part of

macro call command by G65 or G66.

(1)

V a r i a b l e s ( # 1 t h r o u g h # 3 3 )

A local variable is the one that is used for each
macro locally, That is, when the local variable

is used, the variable area ( #1 through #33) is
independently allocated for each macro call,
certain values are stored by argument designa-

tion, and the results of operations in macro are

retained.

Single-1evel Macro

—

09201 ;

“ #1, #2, #3

G65 P9205

Double-level Macro

09205 ;

Read /write
Enabled

Argument

Read /write

Designation

Enabled

Local variable area

for single-level macro

for duplicate-level macro

The variables #1, #2, #3, . . . of the same macro

Example

assume different values each time it is called. Each local

variable is reset for each macro

and is registered by

argument designation. The variable not designated
becomes “blank.” Each local variable is set to “blank at
the time of power-on and reset operations.

The local variables can also be used in the main

program, as in macro of other levels.

01000;

O 8000;

M98 P 8000 ;

# 2 = 2 ;

M99;

M30;

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