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Feed rate for rotary
axes
December 2001
MP7270
Feed-rate display in the MANUAL OPERATION and
ELECTRICAL HANDWHEEL operating modes
Input:
0: Display of axis feed rate through pressing an axis direction
key (axis-specific feed rate from MP1020)
1: Display of axis feed rate also before an axis direction key is
pressed (smallest value from MP1020 for all axes)
MP7620
Feed-rate override and spindle speed override
Format:
%xxxxxxx
Input:
Bit 0 – Feed-rate override if rapid-traverse key is pressed in
Program Run mode:
0: Override not effective
1: Override effective
Bit 1 – Non-functional
Bit 2 – Feed-rate override if rapid-traverse key and machine-
direction button are pressed in Manual mode:
0: Override not effective
1: Override effective
Bit 3 – Feed-rate override and spindle speed override in 1%
increments or according to a nonlinear characteristic curve:
0: 1% steps
1: Nonlinear characteristic curve
Bit 4 – Non-functional
Bit 5 – Reserved
Bit 6 – Non-functional
W494
Percentage for feed-rate override
(NC to PLC)
W766
Percentage for feed-rate override
(PLC to NC)
M4180
Rapid traverse programmed (FMAX) NC
The TNC interprets the programmed feed rate for a rotary axis in degrees per
minute. The contour feed rate depends on the distance of the tool center from
the center of the rotary axis.
With the M116 function the contouring feed rate can be converted to mm/min.
In this way the feed rate is independent of the distance from the tool center
to the center of axis rotation:
7 7 7 7
With MP7510 and following, define the center of axis rotation (See "Tilting
Axes" on page 6 – 52). In the NC program, the miscellaneous function M116
is automatically cancelled with END PGM.
Display and Operation
Set
Reset
NC
NC
NC/PLC NC/PLC
NC
6 – 237
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