4
Machine Operating Area 03.04
4.3 Reference
oint a
roach
4
Ó Siemens AG, 2004. All rights reserved
4-116 SINUMERIK 840D/840Di/810D Operator's Guide HMI Advanced (BAD) – 03.04 Edition
4.3 Reference point approach
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/handwheels) 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!
Operating sequence
"Jog" or "MDI" is selected in the "Machine" operating area.
The channel for reference point approach is selected.
Ref Point
The "Ref Point" machine function is selected.
+X
...
X
Turning machine:
Press the "Axis" keys.
X
...
9th Axis
Milling machine:
Select the axis to be traversed and
+
then press the "+" or "-" key.
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