Axis Replacement (Get, Release, Axtochan) - Siemens SINUMERIK 828D Function Manual

Detailed description
2.7 Actions in synchronized actions
2.7.13

Axis replacement (GET, RELEASE, AXTOCHAN)

Command axes can be interchanged between channels via the
Note
The command axis must be assigned to the channel via machine data.
Syntax
GET(<axis 1> [{, <axis n>}])
RELEASE((<axis 1> [{, <axis n> }])
Axis type and axis status regarding axis replacement
The axis type and axis status currently valid at the time of the synchronized action activation,
can be queried via the $AA_AXCHANGE_TYP or $AA_AXCHANGE_STAT system variable.
Depending on the channel that has the current interpolation authorization for this axis and
depending on the status for the permissible axis replacement, a different sequence results
from the synchronized action.
An axis can be requested with
● Another channel has the write or interpolation authorization for the axis
● The requested axis is already assigned to the requested channel
● The axis in the neutral axis state is controlled by the PLC
● The axis is a command axis, oscillating axis, or concurrent PLC axis
● The axis is already assigned to the part program of the channel
An axis can be released from a synchronized action with
● Was previously assigned to the part program of the channel.
● Is already in the neutral axis state.
● Already has another channel that has the interpolation authorization of this axis
92
Note
Supplementary condition: An "axis controlled exclusively by the PLC" or a "permanently
assigned PLC axis" cannot be assigned to the part program.
from a synchronized action, if
GET
Function Manual, 07/2012, 6FC5397-5BP40-3BA0
and
GET RELEASE
, if the axis:
RELEASE
Synchronized actions
commands.