ACU-RITE CNC 3500i - Manual (Page 413)

ACU-RITE 3500i 387
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Programming Non-modal Exact Stop:
With the In-Position Mode activated, the 3500i approaches target and
performs an in-position check before it executes the next move. The
CNC comes to a complete stop at the end of every block. This could
cause witness marks to display on the work, but prevents the CNC
from rounding off sharp corners.
 G-Code format: G9
In-Position Mode (Exact Stop Check):
While the In-Position Mode is active, the 3500i approaches target and
performs an in-position check before the next move is executed. The
CNC comes to a stop at the completion of each command. This could
cause tool dwell marks to display on the work, but prevents the CNC
from rounding off sharp corners.
 G-Code format: G61
Contouring Mode (Cutting Mode) :
The Contouring Mode, also known as Continuous Path Mode or
Cutting Mode, is active at power on. It is used for feed moves. With
the Contouring Mode activated, the 3500i approaches target and
comes within the Continuous Path Tolerance of the target position. No
in-position check is made before the next move is executed. This
enables the smooth contouring of a profile or surface.
 G-Code format: G64
Rapid moves are always performed in In-Position Mode.
In-Position and Continuous Path Tolerances are defined in
the Setup Utility. The In-Position Tolerance should be
closer to target than the Continuous Path Tolerance.
Rapid moves are always performed in In-Position Mode.
The machine builder defines the In-Position and
Continuous Path Tolerances in the Setup Utility.