Yaskawa YASNAC PC NC Programming Manual - Manual (Page 106)

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YASNAC PCNC Programming Manual Chapter 3: Movement Control Commands
FIGURE 3.4.4.30 Correction of Offset Position
(6) Switching the G41 and G42 in the Offset Mode
The direction of offset (left side and right side) can be directly switched without canceling the
offset mode. There are two kinds of G41/G42 switching methods (types A and B) and the
method to be used can be selected by the setting for a parameter.
(a) Type A: pm4013 D1 = 1
The offset direction is switched at the start and end of the block in which the switching of
the offset direction is specified.
pm4013 D1 = 1 Type A
pm4013 D1 = 0 Type B