12. PROGRAM COMMAND
B-64693EN-1/01
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Fig. 12.16.1.1 (a) Coordinate conversion using an Euler's angle
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I0 J0 K0 command
When I0 J0 K0 is specified as an Euler's angle, the alarm PS5457, "G68.2/G68.3 FORMAT ERROR"
usually occurs. When bit 1 (ATW) of parameter No. 13451 is set to 1, the feature coordinate system with
a tilted angle of 0 degree is used.
12.16.1.2
General specifications of the tilted working plane indexing
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Constant surface speed control
Constant surface speed control is exercised by using as the reference the following axis according to bit 6
(3CS) of parameter No.11221. (Refer to the explanation of "CONSTANT SURFACE SPEED
CONTROL" for details)
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3CS=0 : the machine axis specified in address P in a G96 block or the machine axis (in the actually
operating workpiece coordinate system) set in parameter No. 3770.
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3CS=1 : the axis in the feature coordinate system
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Rapid traverse in a canned cycle for drilling
By using bit 1 (D3R) of parameter No. 11221, rapid traverse in the drilling direction in a canned cycle for
drilling during the tilted working plane indexing mode, 3-dimensional coordinate system conversion
mode can be selected and the rapid traverse mode for shift operation in fine boring (G76) or back boring
(G87) for the M system can also be selected. When parameter D3R is set to 0, the cutting feed mode is
selected. When parameter D3R is set to 1, the rapid traverse mode is selected. For positioning to the
initial level at the start of a canned cycle for drilling, however, the rapid traverse mode is used, regardless
of the setting of parameter D3R. Rapid traverse override is applied during the rapid traverse mode, and
cutting feed override is applied during the cutting feed mode. Parameter D3R is also usable to change the
mode of rapid traverse in the rigid tapping direction.