Siemens sinumerik 840D sl Function Manual page 170

Example
4.3 Commencing start-up
4.3 Commencing start-up
Referencing
The following steps must be taken:
• Select "REF" operating mode
• Start referencing for axis 1 (master axis)
• Wait until message "10654 Channel 1 Waiting for synchronization start" appears.
At this point in time, the NCK has prepared axis 1 for synchronization and registers this to
the interface signal:
DB31, ... DBB101 with:
In addition, the following steps must be taken:
• RESET
• Read off values in machine coordinate system:
• Enter the X value of master axis 1 with inverted sign in the machine data of slave axis 3:
Note
This MD is effective after power ON. To avoid having to perform a power ON now, the value
can also be entered in the following machine data:
MD34080 $MA_REFP_MOVE_DIST (reference point distance)
The MD is then valid after a RESET.
38
e.g.
X = 0.941
Y = 0.000
XF = 0.000
MD34090 $MA_REFP_MOVE_DIST_CORR = - 0.941 (reference point offset/absolute
offset)
Special functions: Gantry Axes (G1)
Function Manual, 11/2006, 6FC5397-2BP10-2BA0