Siemens SINUMERIK 840D Function Manual

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Without PLC controlIf the PLC does not have control over the axis, then the axis is treated like a normal positioningaxis (POSA) during asynchronous oscillation.Delete distance-to-goChannel-specific delete distance-to-go is ignored.Axial delete distance-to-go● Without PLC control: Stop via braking ramp● With PLC control: No stop (must be initiated from the PLC)The following applies to both cases: After the axis is stopped, if necessary, the appropriatereversal point is approached and the distance-to-go deleted. The sparking-out strokes are thenexecuted and the end position approached. Provided this has been set inOSCILL_CTRL_MASK.The oscillation movement is then completed.NoteDuring grinding, the calipers can be put into action via axial delete distance-to-go.Emergency stopThe emergency stop completes the oscillation movement that must be restarted.ResetThe oscillation movement is interrupted and deselected with a braking ramp. The optionsselected subsequently are not processed (sparking-out strokes, end point approach).Working area limitation, limit switchesIf it is detected during preprocessing that the oscillation movement would violate an activelimitation, then an alarm is output and the oscillation movement not started.If during an active oscillation movement the oscillation axis overtravels a limitation that hasbeen activated in the meantime (e.g. 2nd software limit switch), then the axis is deceleratedalong a ramp and an alarm output.CAUTIONProtection areasNo protection areas act for a oscillation movement.P5: Oscillation15.2 Asynchronous oscillationAxes and spindles588 Function Manual, 06/2019, A5E47437747B AA