Siemens SINUMERIK Series

S3: Synchronous spindle
13.1 Brief description
Extended Functions
Function Manual, 03/2013, 6FC5397-1BP40-3BA1
707
Coupling options
Synchronous spindle couplings can be defined as
● Permanently configured via channel-specific machine data
(hereinafter referred to as "permanently configured coupling") as well as
● Freely defined using language commands (COUP...) in the part program
(hereafter referred to as "user defined coupling")
. The following variants are possible:
1. A fixed configuration for a coupling can be programmed via machine data. In addition, a
second coupling can be freely defined via the part program.
2. No coupling is configured via machine data. In this case, the couplings can be user-
defined and parameterized via the part program.
Separate following spindle interpolator
The separate following spindle interpolator allows a number of following spindles from
different channels or from another NCU to be coupled as defined by the user to a single
leading spindle. The following spindle interpolator is
●
COUPON or COUPONC activated and
●
COUPOF or COUPOFS deactivated
and is always located in the channel in which the
COUPON, COUPONC command has been
programmed for the following spindle. If the following spindle to be activated was previously
programmed in another channel,
COUPON/COUPONC initiates an axis replacement and fetches
the spindle into its own channel.
Certain synchronous spindle functions can be controlled from the PLC by means of coupling-
specific axial VDI interface signals. These signals act exclusively on the slave spindles and
do not affect the leading spindle (see Section "Controlling synchronous spindle coupling via
PLC (Pag
e 716)").
Definition of synchronous spindles
Before synchronous operation is activated, the spindles to be coupled (FS, LS) must be
defined.
This can be done in two ways depending on the application in question:
1. Permanently configured coupling:
Machine axes that are to function as the following spindle (FS) and leading spindle (LS)
are defined in channel-specific MD 21300 $MC_COUPLE_AXIS_1[n].
The machine axes programmed as the LS and FS for this coupling configuration cannot
be altered by the NC part program.
If necessary, the coupling parameters can be modified with the NC part program.