Specifications

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CONCISE GUIDE FANUC 9

2.3 “G” PREPARATORY OPERATIONS

The G code prepares the control to carry out certain operations that differ according to the number that

follows this code (e.g.: G0, G1, G3, etc.).

There are two types of preparatory functions: modal functions and self-deletion functions. The former

remain active until they are cancelled by other modal functions, the latter are only active in the block

where they are entered.

2.4 “X Z B Y” MOVEMENT ABSOLUTE CO-ORDINATES

Codes X and Z define the absolute co-ordinates referring to the workpiece zero. X determines diameters

(diametrical programming); Z determines the lengths; B determines the back spindle axis movements

(only on machines where this option is installed); Y determines the motor driven turret Y axis movements

(only on machines where this option is installed) .

These codes can be programmed with a positive or a negative sign. If no sign is programmed the value is

considered positive. Values can be programmed with up to three digits after the decimal point.

Example:

∅

∅80

∅

∅40

1 2

3 4

Z +