Siemens SINUMERIK Series Function Manual

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H1: Manual and handwheel travel3.4 Handwheel travel in JOGExtended Functions164 Function Manual, 03/2013, 6FC5397-1BP40-3BA1Behavior at software limit switches, working-area limitationWhen axes are traversed in JOG mode, they can traverse only up to the first active limitationbefore the corresponding alarm is output.Depending on the setting in the machine data:MD11310 $MN_HANDWH_REVERSE (threshold for direction change, handwheel)the behavior is then as follows (as long as the axis has still not arrived at the end point fromthe setpoint side):● The distance resulting from the handwheel pulses forms a fictitious end point which isused for subsequent calculations.If this fictitious end point is, for example, 10 mm behind the limit, these 10 mm must betraversed in the opposite direction before the axis traverses again. If a movement in theopposite direction is to be performed immediately after a limitation is reached, thefictitious distance-to-go can be deleted via delete distance-to-go or deselection of thehandwheel assignment.● All handwheel pulses leading to an end point behind the limitation are ignored. Anymovement of the handwheel in the opposite direction leads to an immediate movement inthe opposite direction, i.e. away from the limit.Feedrate behaviorIn JOG mode, the feedrate behavior of the axis/spindle also depends on the setting data:SD41100 $SN_JOG_REV_IS_ACTIVE (JOG: Revolutional/linear feedrate)SD41100 $SN_JOG_REV_IS_ACTIVEActive An axis/spindle is always traversed with revolutional feedrateMD32050 $MA_JOG_REV_VELO (revolutional feedrate for JOG)orMD32040 $MA_JOG_REV_VELO_RAPID(revolutional feedrate for JOG with rapid traverse override)depending on the master spindle.The behavior of the axis/spindle depends on the setting data:SD43300 $SA_ASSIGN_FEED_PER_REV_SOURCE(revolutional feedrate for positioning axes/spindles)Not activeThe behavior of a geometry axis on which a frame with rotation acts,depends on the channel-specific setting data:SD42600 $SC_JOG_FEED_PER_REV_SOURCE(control of the revolutional feedrate in JOG)Effect of the NC/PLC interface stop signalsThe effect of the NC/PLC interface stop signals on the handwheel travel (abort or interruptionof the traversing motion) can be set via the machine data:MD20624 $MC_HANDWH_CHAN_STOP_COND (definition of the handwheel travelbehavior, channel-specific)MD32084 $MA_HANDWH_STOP_COND (handwheel travel behavior)