FANUC Series 16/18/160/180-Model C for Lathe Operator Manual

PROGRAMMING
3. PREPARATORY FUNCTION
(G FUNCTION)
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3
PREPARATORY FUNCTION (G FUNCTION )
A number following address G determines the meaning of the command
for the concerned block.
G codes are divided into the following two types.
Type Meaning
One–shot G code The G code is effective only in the block in which it is
specified
Modal G code The G code is effective until another G code of the
same group is specified.
(Example)
G01 and G00 are modal G codes.
G01X_;
Z_;
X_;
G00Z_;
G01 is effective in this range
There are three G code systems : A,B, and C (Table 3). Select a G code
system using bits 6 (GSB) and 7 (GSC) of parameter 3401. Generally, this
manual describes the use of G code system A, except when the described
item can use only G code system B or C. ln such cases, the use of G code
system B or C is described.

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