Set Axis Replacement Behavior Variable - Siemens SINUMERIK 840D sl Function Manual

6.4.9

Set axis replacement behavior variable.

The axis is replaced in the currently enabled channel and, depending on the respective axis
type, the axis replacement behavior can be influenced via machine data MD10722
$MN_AXCHANGE_MASK:
Table 6- 2
MD10722
Bit 0 = 1
Bit 1 = 1
Bit 2 = 1
Bit 3 = 0
Bit 3 = 1
Extended Functions
Function Manual, 09/2009, 6FC5397-1BP20-0BA0
Time of release of axes or spindles during replacement
Axis replacement behavior
Automatic Axis Replacement between two channels also takes place when the axis has
been brought to a neutral state by WAITP.
Release by Axis Container Rotation with implicitly generated GET/GETD
When requesting an axis container rotation, all axes of the axis container that can be
assigned to the executing channel are taken into the channel by means of an implicit
GET or GETD. A subsequent replacement is only allowed after completion of the axis
container rotation.
Axis replacement without pre-processing and possible forced re-organization of axes
not involved in the contour.
When an intermediate block is inserted in the main run, a check will be made to
determine whether or not reorganization is required. Reorganization is only necessary if
the axis states of this block do not match the current axis states.
PLC replacing of permanently assigned PLC axis
An axis replacement can be requested from the PLC for each axis. The permanently
assigned PLC axis only from neutral axis to PLC axis and vice versa.
Replacement request via VDI interface
A replacement request via VDI interface is only executed for an:
axis exclusively controlled by the PLC when
MD30460 $MA_BASE_FUNCTION_MASK with Bit4=1.
permanently assigned competing positioning axis (PLC axis) when
MD30460 $MA_BASE_FUNCTION_MASK with Bit5=1.
For such axes the interface signal NCK → PLC DB31, ... DBX68.5 (replacement
possible) is always set to 1. For all other axes this bit is set to 0. For a permanently
assigned PLC axis an axis replacement is only possible from neutral axis to PLC axis
and vice versa.
K5: Mode groups, channels, axis interchange
6.4 Axis/spindle replacement
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