Siemens sinumerik 840D sl Function Manual page 264

Detailed description
2.2 Curve tables
2.2.8 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.
2.2.9 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,
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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axis inhibit, servo enable etc.) causes the corresponding following axis to shut down.
Special functions: Axis Couplings and ESR (M3)
Function Manual, 11/2006, 6FC5397-2BP10-2BA0