HEIDENHAIN CNC Pilot 4290 Pilot - Manual (Page 82)

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Datum shift in C axis (absolute) G152
G152 defines a datum shift for the C axis (reference: Machine Parame-
ter 1005, ff ”Reference point C axis”). The datum is valid until the end
of the program.
Parameters
C:
Angle of the new C-axis datum
Standardize C axis G153
G153 resets a traverse angle >360° or <0° to the corresponding angle
modulo 360° – without moving the C axis.
G153 is used only for cylindrical surface machining. An
automatic modulo 360° function is carried out on the end faces.
Reference diameter G120
G120 determines the reference diameter of the unrolled cylindrical
surface. G120 is necessary if you are using ”CY” (with G110...G113).
G120 is a modular function.
Parameters
X:
Diameter
C axis