Modulo-Leading Axis Special Case; Behavior In Automatic, Mda And Jog Modes - Siemens SINUMERIK 840D Function Manual

M3: Coupled axes
14.2 Curve tables
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.
14.2.8

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°
14.2.9

Behavior in AUTOMATIC, MDA and JOG modes

Activation
An activated curve table is functional in the AUTOMATIC, MDA and JOG modes.
446
; The coupling of Axis A with its leading axis is canceled
Axes and spindles
Function Manual, 06/2019, A5E47437747B AA