Effectiveness Of Plc Interface Signals; Diagnosing And Optimizing Utilization Of Resources - Siemens SINUMERIK 840D Function Manual

Basic setting after run-up
No curve tables are active after run-up.
14.2.10

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.
14.2.11

Diagnosing and optimizing utilization of resources

The following functions allow parts programs to get information on the current utilization of
curve tables, table segments and polynomials.
One result of the diagnostic functions is that resources still available can be used dynamically
with the functions, without necessarily having to increase memory usage. The description of the
parameters in Chapter "Programming Curve Tables" also applies to the following functions.
Axes and spindles
Function Manual, 06/2019, A5E47437747B AA
M3: Coupled axes
14.2 Curve tables
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