Reference Point Approach - Siemens SINUMERIK 840Di sl Operating Manual

4
01/2008
4.3

Reference point approach

Ref Point
+X X
...
X
9th Axis
...
+
© Siemens AG 2008 All rights reserved.
SINUMERIK 840Di sl/840D sl/840D Operating Manual HMI-Advanced (BAD) - 01/2008 Edition
Function
The "Ref Point" function ensures that the control and machine are
synchronized after Power ON.
Before a reference point approach can be carried out, the axes must
be located at positions (if necessary, traversed to these positions
using the axis keys/handwheel) from where the machine reference
point can be approached without collision.
If reference point approach is called from a part program, all axes can
be traversed simultaneously.
Reference point approach can only be performed by machine axes.
The actual value display does not match the real position of the axes
when the control is switched on.
Caution
• If the axes are not safely positioned, you must traverse them to
safe positions in "JOG" or "MDI" mode.
• You must follow the axis motions directly on the machine!
• Ignore the actual value display until the axes have been
referenced!
• The software limit switches are not active!
Sequence of operations
"JOG" or "MDI" is selected in the "Machine" operating area.
The channel for reference point approach is selected.
The "Ref Point" machine function is selected.
Turning machine:
Press the "Axis" keys.
Milling machine:
Select the axis to be traversed and
then press the "+" or "-" key.
Machine operating area
4.3

Reference point approach

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