Zero Offset Shift

zeroOffsetShiftSet

zeroOffsetShiftSet(g:= USINT, x:= LREAL, y:= LREAL, z:= LREAL)

Sets the translation for G-Code g where g must be one of the numbers 54, 55, 56 or 57. Alternatively, the Zero Offset Shift can be set with the PLC Function Block ItpWriteZeroShiftEx.

Example:

The resulting path of the following example is shown in Figure “ExampleZeroOffsetShiftSet”. The zero offset shift of G54 is first set to the translation [0,10,0]. It gets active for N20 and any later segment endpoints until a novel translation is applied. The second invocation of zeroOffsetShiftSet has an immediate effect. It applies to N30 and any later segment endpoints until a novel translation is applied. The same holds for the last invocation. However, the block N40 does not program the Y-coordinate. Therefore, the change does not become apparent for N40. (See section Transformations for details.) Because the block N50 programs the Y-coordinate, it applies the recent [0,30,0]-translation.

!zeroOffsetShiftSet(g:=54, x:=0, y:=10, z:=0);
N10 G01 X20 Y0 F6000
N20 G01 G54 X40 Y0 
!zeroOffsetShiftSet(g:=54, x:=0, y:=20, z:=0);
N30 G01 X60 Y0
!zeroOffsetShiftSet(g:=54, x:=0, y:=30, z:=0);
N40 G01 X80 
N50 G01 X100 Y0
M02

Figure “ExampleZeroOffsetShiftSet”.