Behavior Of Synchronism Signals During Synchronism Correction; Delete Synchronism Correction And Nc Reset - Siemens SINUMERIK 840D sl Function Manual

Coupling deselection
If the coupling is deactivated, the following spindle continues to rotate at the speed
corresponding to the sum of both speed components. The motion transition upon coupling
deselection is at continuous speed.
With COUPOF, the spindle behaves as if it had been programmed with the speed and
direction transferred from the other spindle. In the example, this would be M4 S400.
When COUPOFS is programmed, the following spindle is decelerated to standstill from the
current speed.
Activate additional functions
The following spindle can also be a master spindle. In this case, it is capable of additional
functions.
● Rotational feedrate with G95, G96 and G97. With G96 S2=... the "constant cutting speed"
● Rigid tapping without compensating chuck with G331, G332.
14.4.5

Behavior of synchronism signals during synchronism correction

Effect of synchronism correction
New synchronism signals are produced by comparing the actual values with the corrected
setpoints. Once a correction process has been undertaken, the synchronism signals should
be present again.
14.4.6

Delete synchronism correction and NC reset

Variable $AA_COUP_CORR[Sn] returns the value zero for different situations in which the
synchronism correct is deleted:
● Once a synchronized spindle coupling has been activated for the following in question
● A synchronism correction active during NC reset but not at the parts program end is
● At M30, an existing synchronism correction is retained
● At the user end, the correction value can also be deleted at any early point by describing
Extended Functions
Function Manual, 09/2009, 6FC5397-1BP20-0BA0
can be activated for the following spindle.
The speed dependent on the position of the transverse axis is the setpoint speed for the
speed interpolator of spindle 2 and is therefore included in the total speed of S2.
with COUPON(..)/COUPONC(..), an existing synchronism correction is adopted in the
setpoint position.
adopted in the setpoint position. This does not affect the synchronism signals.
the variable $AA_COUP_CORR with the value zero. The synchronism correction is
removed immediately and using a ramp with reduced acceleration rate if larger values are
involved.
S3: Synchronous spindle
14.4 Special features of synchronous mode
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