Example Of An Axis Replacement - Siemens SINUMERIK 840D sl Function Manual

K5: Mode groups, channels, axis interchange
6.4 Axis/spindle replacement
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.
6.4.2

Example of an axis replacement

Assumption
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 2nd axis between the
channels and to allocate to channel 1 after power ON.
Exercise
The task is subdivided into the following areas:
● Machine data allocation so that the prerequisites for axis replacement are given.
● Programming of axis replacement between channel 1 and channel 2.
Fulfillment of preconditions
Population of channel-specific machine data MD20070
$MC_AXCONF_MACHAX_USED[1]=(1, 2, 3, 4, 0, 0, 0, 0)
$MC_AXCONF_MACHAX_USED[2]=(5, 6, 2, 0, 0, 0, 0, 0)
Population of the axis-specific machine data:
MD30550 $MA_AXCONF_ASSIGN_MASTER_CHAN[AX2]=1
472
Function Manual, 09/2009, 6FC5397-1BP20-0BA0
Extended Functions