Owner's manual

Axis Motion
Chapter 14
14-42
Special Considerations
Feature: Consideration:
ControlReset Ifa controlresetoperation isperformed while the controlis
againstahardstoptheholdingtorque isreleased andtheaxis
is taken out of the hard stop state.
Block Reset Ifablock resetisperformed during aG24 blockbefore the
hardstop hasbeen reached,thetorque limitsappliedtothat
axisareremoved andtheG24 blockisaborted.
ProgramChecking Feed to hard stop blocksareexecuted asnormal G01moves
while in QuickCheck.
Whileindryrunthecontrol will notexecuteG24 feed to hard
stop blocksatrapid. Feed tohard stopblocksareexecutedat
the programmed feedrateduring dryrunand all the axis torque
restrictionsareapplied(dry run isignoredduringtheG24
block).
Deskew and
DualAxes
Onlyone servo canbe fed to ahardstop. Thisrestriction
makesprogramming aG24 codeforeithera Deskew axis or
DualAxesinvalid.
Probing Youcan notuseprobing with the feed to hard stop feature
becausea probe G-code and a hard-stopG-codecannotbe
programmed inthesameblock.Theprobe mustbeunarmed
whentheG24 blockisexecuted,and whentheaxisis removed
fromthehardstop. Youcan howeverperformprobingwhile
the axisisparkedagainstthe hardstop.
Block Retrace You can notretrace anyblockthatmoves anaxisoffofa hard
stop. Thisis because the startpointofthatmove is
determinedbythehardstopwhichcan onlybe safelyreached
byexecuting a G24 block. You can retrace a G24 blockas
longas the axisisstill againstthehardstopwhentheretrace
operationbegins. You cannotretrace through programmable
acc/dec blocks (G47.xand G48.x). However,youcan retrace
through blocks where programmable acc/decwasalready
active.
InterruptPrograms You canexecute aninterruptprogramduring a G24 block
provided youarenotperforming a type1 interrupt(type 1
interruptsare incompatible withthehardstop feature). You
cannotmovean axisthatis currently holding againsta hard
stop usingan interruptmacro.
Youcan notexecute a G24 block withinan interruptmacro.
ExactStopMode
(G61)
The G61(exactstop mode)doesnotfunction onG24 blocks.
G61 mode is ignored whena G24is executed.
PolarProgramming
(G16)
Youcan notprograma G24 blockifthe axisyouare
programming againstthe hard stop is inthecurrentplaneand
the controlis in polarprogramming mode.
END OF CHAPTER