396
OPTIONS
96-8000
June 1999
The end of a feed move is delayed until the following error is below an amount set in Setting 85. If Setting 85 is
set to 0.1, with Parameter 113 set to 375 (0.0375 seconds), this means that the highest feed rate which will
give continuous cutter motion is:
(0.1)*60/0.0375 = 160 inches per minute
ACCELERATION IN R APID M OVES
Rapid moves have a slightly different operation when continuous cutter mode is active. Acceleration for the next
motion is started when the axes being moved are all within the "In Position Limit" Parameters 101, 102, 103,
and 104. These parameters have units of encoder steps. Rapid moves will also decelerate at the constant
accel/decel limit until the speed drops below that for exponential accel/decel. An example of the "In Position
Limit" values follows. If Parameter 101 (for X) is 8000 and Parameter 5 is 138718, a rapid move of will proceed
to the next block when the X-axis is within a distance of:
8000 / 138718 = 0.0577 inches
To prevent the rounding of corners, you can specify exact stop either with G09 (non-modal) or with G61
(modal). When either of these is active in a motion, all of the axes are brought to an exact stop, at zero speed,
before the next motion is started.
Note that in this machine, using the default parameter settings, rapid and feed moves will both be blended to
provide continuous cutter path and rounded corners. Unless you specify exact stop, the following rapid or feed
block will be started slightly before the completion of the previous block.
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