System Variables; General Supplementary Conditions - Siemens SINUMERIK 840D Function Manual

Master value coupling with synchronized action
Axis 4 is coupled to X via a master value coupling. The acceleration response is limited to
position 80% by static synchronized action 2 from position 100.
...
N120 IDS=2 WHENEVER $AA_IM[AX4] > 100 DO ACCLIMA[AX4]=80
N130 LEADON(AX4,X,2)
...
14.6.2.3

System variables

For geometry axis, channel axis, machine axis and spindle axis, the following readable system
variables are available in the part program and synchronous actions:
Identifier
Preprocessing
$PA_ACCLIMA[n]
$PA_VELOLIMA[n]
Main run
$AA_ACCLIMA[n]
$AA_VELOLIMA[n]
Note
Reading the main run variables, implicitly triggers a preprocessing stop.
14.7

General supplementary conditions

Note
Drive optimization
At a SINAMICS S120 drive unit, a maximum of 3 drives can be optimized or measured at the
same time (speed controller optimization/function generator). Therefore, for a coupling with
more than 3 coupled drives at the same time, we recommend that these are distributed over
several drive units.
Note
Block search with active coupling
For an active coupling, it is recommended to only use block search type 5, "Block search via
program test" (SERUPRO) for a block search.
Axes and spindles
Function Manual, 06/2019, A5E47437747B AA
Data type Description
Acceleration offset set with ACCLIMA[Ax]
REAL
Velocity offset set with VELOLIMA[Ax]
REAL
Acceleration offset set with ACCLIMA[Ax]
REAL
Velocity offset set with VELOLIMA[Ax]
REAL
M3: Coupled axes
14.7 General supplementary conditions
Unit
%
%
%
%
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