Specifications

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CONCISE GUIDE FANUC 89
5.2 PARAMETRIC PROGRAMMING
Parametric programming uses variables, arithmetical instructions and conditioned skip instructions. In this
way programs for general use can be developed, or they can be personalised for specific customer
requirements.
VARIABLES
There are four types of variables:
From #1 to #33 LOCAL VARIABLES These can only be used inside a macro and not
shared with other macros. At power on the
content of these macros is nil because they are
volatile.
From #100 to #149 COMMON VARIABLES These can be shared with other
macros. At power on the content of these
macros is nil because they are volatile
From #500 to #999 COMMON VARIABLES These are like the variables from #100 to #149
with the difference that they are stable, they
hold their content even with the machine
switched off.
From #1000 to #…. SYSTEM VARIABLES Used to read and write NC data, such as
position of tool, of the axis and the tool
correction values etc.
Since genuary 2001 common variables “fixed” by the customers, for parametric programming, are
those which range from #510 to #699; as the others are used by Graziano SPA for specific
operations.