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12.2.2 Deceleration Check
The deceleration check function leads the machine to decelerate and stop at the join between one block and
another before executing the next block. This is effective to alleviate the machine shock and prevent the
corner rounding when the feed rate of the control axis changes suddenly.
Without deceleration check
Corner rounding occurs because
the N011 block is started before
the N010 command is completely
finished.
The conditions for executing deceleration check are described below.
(1) Deceleration check in the rapid traverse mode
In the rapid traverse mode, the deceleration check is always performed when block movement is
completed before executing the next block.
(2) Deceleration check in the cutting feed mode
In the cutting feed mode, the deceleration check is performed at the end of block when any of the
conditions below is applicable before executing the next block.
(a) When G61 (exact stop check mode) is selected.
(b) When the G09 (exact stop check) is issued in the same block.
(c) When the error detect switch (external signal) is ON.
M700V Series Specifications Manual
12 Program Support Functions
With deceleration check
A sharp edge is formed because
the N011 block is started after the
N010 remaining distance has
reached the command
deceleration check width or the
in-position check width.
III - 267
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