Marginal Conditions; Examples; Example Of Asynchronous Oscillation - Siemens SINUMERIK 840D Function Manual

Special cases
If the PLC input signal "oscillation reversal" is activated as the axis is approaching the start
position, the approach movement is aborted and the axis continues by approach interruption
position 1.
If the PLC input signal "oscillation reversal" is set during a stop period, the stop timer is
deactivated; if exact stop fine has not yet been reached, the axis waits for the exact stop fine
reached signal before continuing its motion.
If the PLC input signal "oscillation reversal" is activated as the axis is approaching the end
position, the approach movement is aborted and oscillation is terminated.
For an example of the external oscillation reversal command (see Section "Change reversal
position via synchronized action with "external oscillation reversal" (Page 611)").
15.4

Marginal conditions

Availability of the "Oscillation" function
The function is an option ("oscillation functions"), which must be assigned to the hardware
through the license management.
15.5

Examples

Requirements
The examples given below require components of the NC language specified in the sections
entitled:
● Asynchronous oscillation
and
● Oscillation controlled by synchronized actions.
15.5.1

Example of asynchronous oscillation

Task
The oscillation axis Z must oscillate between -10 and 10. Approach reversal point 1 with exact
stop coarse and reversal point 2 without exact stop. The oscillation axis feedrate must be 5000.
3 sparking-out strokes must be executed at the end of the machining operation followed by
approach by oscillation axis to end position 30. The feedrate for the infeed axis is 1000, end of
the infeed in X direction is at 15.
Axes and spindles
Function Manual, 06/2019, A5E47437747B AA
P5: Oscillation
15.5 Examples
601