Programming manual
CNC 8055
CNC 8055i
PATH CONTROL
6.
·M· & ·EN· MODELS
SOFT: V02.2X
·93·
Arc tangent to previous path (G08)
6.5 Arc tangent to previous path (G08)
Via function G08 you can program an arc tangential to the previous path without having to program
the coordinates (I.J &K) of the center.
Only the coordinates of the endpoint of the arc are defined, either in polar coordinates or in Cartesian
coordinates according to the axes of the work plane.
Supposing that the starting point is X0 Y40, you wish to program a straight line, then an arc tangential
to the line and finally an arc tangential to the previous one.
Function G08 is not modal, so it should always be programmed if you wish to execute an arc
tangential to the previous path. Function G08 can be programmed as G8.
Function G08 enables the previous path to be a straight line or an arc and does not alter its history.
The same function G01, G02 or G03 stays active after the block is finished.
G90 G01 X70
G08 X90 Y60 ; Arc tangent to previous path.
G08 X110 Y60 ; Arc tangent to previous path.
When using function G08 it is not possible to execute a complete circle, as an infinite range of solutions
exists. The CNC displays the corresponding error code.
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