Siemens SINUMERIK Series

K5: Mode groups, channels, axis interchange
5.4 Axis/spindle replacement
Extended Functions
322 Function Manual, 03/2013, 6FC5397-1BP40-3BA1
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 axis type and the current channel responsible for this axis are displayed in an
axial PLC interface byte (see Section "Axis replacement via the PLC").
Note
If an axis is not valid in the selected channel, this is indicated by inverting the axis name on
the user interface.
5.4.2 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)