Siemens SINUMERIK 840D sl Function Manual page 478

Mode Groups, Channels, Axis Replacement (K5)
Axis/spindle replacement
Example of an axis replacement between channels
With 6 axes and 2 channels, the 1st, 2nd, 3rd and 4th axis in channel 1 and the 5th and 6th
axis in channel 2 shall be used. It shall be possible to replace the 1st axis, this shall be
allocated to channel 2 after power ON.
The channel-specific machine data must be allocated with:
CHANDATA(1)
MD20070 $MC_AXCONF_MACHAX_USED=(1, 2, 3, 4, 0, 0, 0, 0)
CHANDATA(2)
MD20070 $MC_AXCONF_MACHAX_USED=(5, 6, 1, 0, 0, 0, 0, 0)
The axis-specific machine data must be allocated with:
MD30550 $MA_AXCONF_ASSIGN_MASTER_CHAN[AX1]=2
Display
The current type of axis and the current channel for this axis will be displayed in an axial
PLC interface byte. See Section "Axis replacement by PLC".
Note
If an axis is not valid in the channel selected, this is displayed by inversion of the axis name
on the operator panel front of HMI.
478
Function Manual, 03/2009, 6FC5397-1BP10-4BA0
Extended Functions