Geometry Axis In Rotated Frame And Axis Replacement - Siemens SINUMERIK 840D sl Function Manual

NC channel: Channel-specific NC/PLC interface signals (selection)
● DB21, ... DBXDBX7.1 (NC start)
● DB21, ... DBXDBX7.3 (NC stop)
● DB21, ... DBXDBX7.7 (reset)
PLC: Axial NC/PLC interface signals
● DB31, ... DBX28.1 (reset)
● DB31, ... DBX28.2 (continue)
● DB31, ... DBX28.6 (stop along braking ramp)
Possible traversing functions
The following traversing functions are possible for an axis permanently assigned to the PLC:
1. Traversing in the JOG mode using the traversing keys and handwheel
2. Referencing the axis
3. Traversing as competing positioning axis from the PLC via FC18
After traversing functions 1. to 3. have been completed, the axis automatically goes back into
the "neutral axis" state.
6.2.11

Geometry axis in rotated frame and axis replacement

Replacement expansion via Frame with Rotation
In JOG mode, a geometry axis with rotated frame can be traversed as PLC axis or as a
command axis via static synchronized actions. In order to achieve this, in machine data
MD32074 $MA_FRAME_OR_CORRPOS_NOTALLOWED, bit 10=1 must be set. The
reposition behavior of this axis is influenced via Bit 11.
Note
Before changing operational mode during JOG mode
Before changing the operational mode from JOG mode, all traverse motions of all PLC and
command axes, which have been linked as geometry axes in the rotated frame, must have
been concluded. These axes must at least have become neutral axes again, otherwise alarm
16908 will be generated when the operational mode is changed. This alarm is also generated
when only a single geometry axis is traversed as a PLC or command axis in the rotated
coordinate system.
Such an axis can only become a PLC or command axis within the channel, an axis replacement
in another channel is not allowed.
Extended Functions
Function Manual, 10/2015, 6FC5397-1BP40-5BA3
K5: Channel synchronization, axis interchange
6.2 Axis replacement
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