YASKAWA MOTIONPACK-110 Descriptive Information page 70

4.2.12 POSITION OFFSET IN'X- AND'Y-AXES (G45TO G48)
) ]G01 G45 X-" Y--" D--. F...; I
X, Y position offset is for extending or reducing the programmed moving distances by the
values in the offset memory, and is mainly used to compensate for tool radius in machining
rectangular workpieces.
(1) G Codes for X, Y Position Offset
Extension or reduction is determined by the sign of the offset value designated by the D
code and the G codes.
Generally, offset values should be processed as plus values for the sake of clear
understanding.
Table 4.5
Sign of Offset Value
G Code Group Meaning
(+) (-)
G45 * Extension Extension Reduction
G46 * Reduction Reduction Extension
G47 . * Double extension Double extension Double reduction
G48 * Double reduction Double reduction Double extension
(2) G45 to G48 extend or reduce the motions along the axis designated by these blocks. The
extension or reduction is effective only in the block in which G45 to G48 are programm-
ed, and the motions in other blocks are unaffected. Therefore, to restore the originally
programmed values, the opposite offset must be programmed.
(3) To clarify the above operation, programming these commands in the incremental mode
(Ggl) is helpful. In the absolute mode (G90), adding or reducing offset values may be
unwieldy.
(4) When programming G45 to G48, specify the offset memory No. by D. However, Since D
is modal, when the same D value is used before, it need not be programmed.
(Program example)
®
r I
G91 ; I E
I
(_]G00 G46 X.,.._.Y.-.D01; .............. REDUCTION @)l r
(_)G01 G47 Y ...... (D0!)F; ............... DOUBLE EXTENSION I I®
• I I
(_) G47 X ...... (IX)l); ................. DOUBLE EXTENSION I ,
(_) G47 Y ...... (D01); ................. DOUBLE EXTENSION _
' I
(_) G47 X, ..... (D01); ................. DOUBLE EXTENSION v j
(_00 G46 X ...... Y-..(D01); ............ RE.DUCTION ®
PF_OGRAMMING
X
Fig. 4.15
57