P2: Positioning axes
10.7 Control by the PLC
Extended Functions
634 Function Manual, 03/2013, 6FC5397-1BP40-3BA1
Control response to PLC-controlled axis
machine data:
MD30460 $MA_BASE_FUNKTION_MASK
which is not controlled
exclusively by the PLC
Bit 4 = 0 cannot be changed directly with axis replacement
command GET (axis) or AXTOCHAN(axis,
channel) to an axis controlled by the NC program,
see * Note on axis replacement.
Bit 4 = 1 cannot be requested for the NC program. GET or
AXTOCHAN from the NC program or a
synchronized action, or programming the axis in
the NC program, are rejected with alarm 26075.
MD30460 $MA_BASE_FUNKTION_MASK For the PLC-controlled axis
Bit 6 = 1 channel-specific
IS DB 21, ... DBX6.0 ("feed disable") is not
effective. This axis is not stopped when feed
disable is activated, but continues to move.
Bit 7 = 1 the axis is not taken into account when
IS DB 21, ... DBX36.3 ("all axes stationary") is
generated. This signal is output with 1 even if all
other axes in the channel are stationary and only
the PLC-controlled axis is active.
* Note on axis replacement
This replacement of a "neutral axis" by an "NC program axis" does not take place until the
PLC has really relinquished control of the axis in accordance with use case "Relinquish
control of axis". Waiting for this axis interchange is displayed on the HMI operator panel
front.
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