Siemens SINUMERIK 840Di sl Operating Manual page 112

4
Machine operating area
4.3 Reference point approach
Feed Stop
+X X
...
X
9th Axis
...
+
4-112
Machine manufacturer
The selected axis moves to the reference point. The direction and
sequence is defined by the machine manufacturer in the PLC
program.
If you have pressed the wrong direction key, the action is not
accepted and the axes do not move. The display shows the reference
point value.
No symbol is displayed for axes that are not referred to a reference
point.
This symbol is displayed for axes that need to be referenced.
This symbol is shown next to an axis if it has been referenced.
The axis, once started, can be stopped before it reaches the reference
point.
Turning machine:
Press the "Axis" keys.
Milling machine:
Select the axis to be traversed and
then press the "+" or "-" key.
The selected axis moves to the reference point.
Caution
The machine is synchronized as soon as the reference point is
reached. The actual value display is set to the reference point value.
The display is the difference between the machine zero and the slide
reference point. From now on, path limits, such as software limit
switches, are active.
You can end the function by selecting another operating mode ("JOG",
"MDI" or "Automatic").
• All axes of a mode group can approach the reference point
simultaneously (depending on the PLC program of the machine-
tool manufacturer).
• The feedrate override is active.
SINUMERIK 840Di sl/840D sl/840D Operating Manual HMI-Advanced (BAD) - 01/2008 Edition
4
01/2008
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