Behavior In Automatic, Mda And Jog Modes; Effectiveness Of Plc Interface Signals - Siemens SINUMERIK 840D sl Function Manual

M3: Coupled axes
5.2 Curve tables
5.2.9

Behavior in AUTOMATIC, MDA and JOG modes

Activation
An activated curve table is functional in the AUTOMATIC, MDA and JOG modes.
Basic setting after run-up
No curve tables are active after run-up.
5.2.10

Effectiveness of PLC interface signals

Dependent following axis
With respect to the motion of a following axis that is dependent on the leading axis, only the
following axis interface signals that effect termination of the motion (e.g. axis-specific feed
stop, axis inhibit, servo enable, etc.) are effective.
Leading axis
In an activated axis group, the interface signals move the leading axis through the axis
coupling to the associated following axis, i.e.:
• feed control of the leading axis causes a corresponding feed control of the following axis.
• A shutdown of the leading axis through interface signals (e.g., axis-specific feed stop, axis
inhibit, servo enable etc.) causes the corresponding following axis to shut down.
The effect of the axis inhibit of the leading axis on the following axis can be prevented through
the following MD setting:
MD37160 $MA_LEAD_FUNCTION_MASK, Bit 1 = 1
Position measuring system 1/2 (DB31, ... DBX1.5/1.6))
Switch-over of the position measuring system for the leading and following axes is not
inhibited for an active coupled axis group. The coupling is not canceled.
Recommendation: Switch the measuring system over when the coupling is deactivated.
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Function Manual, 09/2011, 6FC5397-2BP40-2BA0
Special Functions