HEIDENHAIN TNC 426 PB/M Technical Manual page 307

MP Function and input
MP7680 Machine parameter with multiple function
Format:
MP7681 M/S/T/Q transfer to the PLC during block scan
Format:
Input:
December 2001
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Bit 8 – Inserting a rounding arc or
cubic spline
0: Rounding arc is inserted
1: Instead of the rounding arc a cubic
spline is inserted
Bit 9 – Constant jerk on spline (bit 8 = 1)
0: No constant jerk
1: Constant jerk
Bit 10 – Cutter-radius-compensated outside
corners
0: Insertion of a circular arc
1: Insertion of a spline curve
Bit 11 – Reserved
Bit 12 – Behavior of Cycle 28
0: Standard behavior
1: The slot wall is tangentially approached and
departed; at the beginning and end of the slot
a rounding arc with a diameter equal to the slot is
inserted.
%xxxx
Bit 0 –
0: During block scan, transfer M functions to
the PLC
1: Collect M functions, and after the block scan,
to the PLC
Bit 1 –
0: Transfer T code to the PLC during block scan
1: Transfer last T code to the PLC after block
scan
Bit 2 –
0: During block scan, transfer S or G code to
the PLC
1: After block scan, transfer S or G code
to the PLC
Bit 3 –
0: During block scan, transfer FN19 outputs to
the PLC
1: After block scan, transfer last FN19 outputs
to the PLC
List of Machine Parameters
Software Page
version and
behavior
PLC 6 – 153,
6 – 155,
RUN
6 – 293,
6 – 295,
6 – 344,
6 – 416
PLC 6 – 297
4 – 69