Siemens SINUMERIK 840D sl Function Manual page 754

S3: Synchronous spindle
14.1 Brief description
IS "Following spindle active" (DB31, ... DBX99.1) and IS "Leading spindle active" (DB31, ...
DBX99.0) indicate to the PLC for each machine axis whether the axis is active as a leading or
following spindle.
The LS can be programmed either via a part program, PLC or also using synchronized actions.
Transformation ratio
The transformation ratio is programmed with separate numerical values for numerator and
denominator (transformation ratio parameters). It is therefore possible to specify the
transformation ratio very exactly, even with rational numbers.
In general:
k = transformation ratio parameter for numerator Transformation ratio parameters for
Ü
denominator = Ü
The value range of the transformation ratio parameter (Ü
in the control.
The transformation ratio parameters for the coupling configured via machine data can be
defined in channel-specific SD42300: COUPLE_RATIO_1[n]. In addition, the transformation
ratio can be altered with language command COUPDEF(FS, LS, Ü
values entered in the setting data is not overwritten in this case (default settings).
The transformation ratio for the coupling defined via the NC part program can only be input
with language command COUPDEF (...).
The new transformation ratio parameters take effect as soon as the COUPDEF command has
been processed.
For further programming commands for synchronous spindle couplings, please see
"Programming of synchronous spindle couplings" Section .
754
: Ü
numerator denominator
, Ü ) is virtually unlimited
numerator denominator
, Ü
numerator denominator
Function Manual, 10/2015, 6FC5397-1BP40-5BA3
,...). The
Extended Functions