Control Response Of Plc-Controlled Axes - Siemens SINUMERIK 840D sl Function Manual

P2: Positioning axes
11.7 Control by the PLC
PLC actions
Initiate axial reset
DB31, ... DBX28.1 = 1 (reset)
PLC relinquishes control of AX1 to the NC from
DB31, ... DBX28.7 = 0 (PLC controls axis)
11.7.3

Control response of PLC-controlled axes

Response to channel reset, NEWCONFIG, block search and MD30460
Table 11-1
Control response to
Mode change and NC program control
Channel RESET
NEWCONFIG
Block search Type 5 SERUPRO
All block search variants
of types 1, 2, 4 and 5
NC-controlled retraction activated with
$AC_ESR_TRIGGER.
machine data:
MD30460 $MA_BASE_FUNKTION_MASK
Bit 4 = 0
Bit 4 = 1
MD30460 $MA_BASE_FUNKTION_MASK
686
NC response
● Stop AX1
● Read-in axial machine data
● DB31, ... DBX63.0 = 0 (reset)
● NCK accepts control of machine axis
● DB31, ... DBX63.1 = 0 (PLC controls the axis)
● DB31, ... DBX63.0 = 0 (reset)
PLC-controlled axis
work independently of axis.
No axial machine data are effective and a travers‐
ing movement is not aborted.
No axial machine data are effective.
are processed during SERUPRO to simulate the
normal procedure, e.g. PLC takes over or relin‐
quishes control of this axis which is also traversing
via the PLC.
The PLC takes over control of the axis before the
approach block and is responsible for positioning
this axis.
has no effect and acts only on the specified PLC-
controlled axis.
which is not controlled
exclusively by the PLC
cannot be changed directly with axis replacement
command GET (axis) or AXTOCHAN(axis, chan‐
nel) to an axis controlled by the NC program, see
* Note on axis replacement.
cannot be requested for the NC program. GET or
AXTOCHAN from the NC program or a synchron‐
ized action, or programming the axis in the NC
program, are rejected with alarm 26075.
For the PLC-controlled axis
Function Manual, 10/2015, 6FC5397-1BP40-5BA3
Extended Functions