Acu-Rite CNC 3500i User Manual

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11 G-Code Edit, Help, & Advanced Features
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Setting Stroke Limit:  
The software limits feature creates an envelope that limits the tool's 
range of travel. It is also called the Stored Stroke Limit feature. The 
X, Y, and Z limits represent the extreme distance the tool can travel 
in the positive X, Y, and Z directions. The I, J, and K limits represent 
the extreme distance the tool can travel in the negative X, Y, and Z 
directions.
To set software limits make sure the tool is within the envelope 
defined by the software limits (XYZIJK).
In Edit Mode or Manual Data Input Mode set the appropriate values 
or the 3500i does not activate software limits.
G-Code format: G22
Return from Reference Point: 
Return from Reference Point can be used in conjunction with the 
Intermediate Reference Point. If the Intermediate Reference Point is 
commanded prior to the Reference Point, then the intermediate 
machine reference point is passed to the Reference Point. Return 
move is rapid or feed depending on which is active.
G-Code format: G29
Move Reference from Machine Datum:
Move Reference from Machine Datum is used to move an axis in 
reference to preset machine datum without being influenced by tool 
or fixture offsets. The default machine datum location is preset to 
machine zero. Move is rapid or feed depending on which is active to 
machine datum position.
G-Code format: G30
Software limits are referenced to Absolute Machine Zero. 
The values of the positive and negative limits should be 
programmed within existing machine limits.
Recommended Machine Datum default setting is machine 
zero. Changes to datum setting will shift intermediate 
point and machine reference position.