Rockwell-automation 8520-GUM 9/Series CNC Grinder Operation and Progra Manual de usuario Pagina 466

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Tool Control Functions
Chapter 13
13-4
Your system installer has the option in AMP to determine exactly when
wheel length offsets take effect and when the wheel position updates on the
screen to the new shifted location. This manual assumes that your system
is configured to immediately shift the coordinate system by the geometry
offset amounts, and delay the actual physical move that re-positions the
wheel in the current work coordinate system. See documentation prepared
by your system i nstaller to determine the method used in your specific
system.
The control activates a wheel length offset when it executes any block that
contains a T word. Your system installer selects the activation type from
the following:
Systeminstaller
selectsthis
activation type:
Resulting in this display change: and thisaxismotion:
immediate shift/
immediate move
positiondisplay changesto reflectthe
grindingwheel’snewlocati on
thecontrol generatesa moveequaltoand opposite
theoffsetamountoneachaxis.
immediate shift/
delaymove
positiondisplay changesto reflectthe
grindingwheel’snewlocati on
thecontrol doesnotgenerate themove activating
theoffset untilamove on theaxis is made. Then
theoffset amountis applied totheendpoint ofthe
move. Eachaxis thathas a length offsetmustbe
movedto activatethe offsetonthataxis.
delayshift/
delaymove
positiondisplay doesnotchange to
reflectthe offsetuntilaxis motionon
the offsetaxis occurs
thecontrol doesnotgenerate themove activating
theoffset untilamove on theaxis is made. Then
theoffset amountis applied totheendpoint ofthe
move. Eachaxis thathas a length offsetmustbe
movedto activatethe offsetonthataxis.
Important: If your system installer selects delay move type as the
activation type, the control cannot activate wheel offsets in a circular block
(G02 or G03). In this case, the control generates an error if you program a
circular move in the same block, or as the first motion block immediately
following the T word.
If the activation t ype is immediate shift /immediate move, the control
generates its own linear blocks to activate the offset. In this case, you can
program the T word in a circular or linear block. The control activates the
offset before the moves in that block take place.
13.1.2
Activation of Wheel Length
Offsets
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