Setting up the machine2.2 Approaching a reference pointMillingOperating Manual, 03/2010, 6FC5398-7CP20-1BA0 53;=3. Select the axis to be traversed.4. Press the <-> or <+> key.The selected axis moves to the reference point.If you have pressed the wrong direction key, the action is notaccepted and the axes do not move.A symbol is shown next to the axis if it has been referenced.The axis is referenced as soon as the reference point is reached. The actual value display isset to the reference point value.From now on, path limits, such as software limit switches, are active.End the function via the machine control panel by selecting operating mode "AUTO" or"JOG".2.2.2 User agreementIf you are using Safety Integrated (SI) on your machine, you will need to confirm that thecurrent displayed position of an axis corresponds to its actual position on the machine whenyou reference an axis. Your confirmation is the precondition for the availability of otherSafety Integrated functions.You can only give your user acknowledgement for an axis after it has approached thereference point.The displayed axis position always refers to the machine coordinate system (Machine).OptionUser acknowledgement with Safety Integrated is only possible with a software option.Procedure1. Select the "Machine" operating area.2. Press the [ key.]