Modulo-Leading Axis Special Case - Siemens SINUMERIK 840D sl Function Manual

Deactivation
The switch off of the coupling to a curve table takes place through the following command:
LEADON (<Following axis>, <Leading axis>)
Deactivation is possible:
• In the part program
• in synchronized actions
Note
While programming LEADOF, the abbreviated form is also possible without specification of
the leading axis.
Example:
...
N1010 LEADOF(A,X)
...
Multiple use
A curve table can be used several times in a single part program to couple different channel
axes.
5.2.8

Modulo-leading axis special case

Position is absolute
When an axial master value coupling is active, the position of the following axis via a curve
table is unique, i.e. an absolute assignment to the master axis exists.
This means that, when a modulo rotary axis is used as the master axis, the position of the
master axis is absolute. In other words, the position of the modulo rotary axis entered in the
curve table is absolute, and not modulo-reduced.
Example
Let the position of a modulo rotary axis with LEADON be 210°. The position 210° degrees is
used as the starting value in the curve table. After one rotation of the modulo axis, the axis
position is again displayed as 210°. The absolute position 570° is however taken as the input
value in the curve table:
210° + 1 round (360°) = 570°
Special Functions
Function Manual, 09/2011, 6FC5397-2BP40-2BA0
; The coupling of Axis A with its leading axis is
canceled
M3: Coupled axes
5.2 Curve tables
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