Lenze ETC Motion Control - Manual (Page 220)

Machine constants
Configuration of axes − Synchronous axes
MK_ACHSENART
4
4.14
4.14.1
l
220 EDSTCXN EN 2.0
4.14 Configuration of axes − Synchronous axes
A synchronous axis is configured in the control by entering the
corresponding axis number in two places in MK_CANDRIVES. This way, a
forced coupling is generated between the two physical axes.
The axis channel with the lower index is automatically the master axis. The
slave axis channel, which has been assigned the same axis identification, is
the slave axis. The slave axis executes all entries for the master axis
synchronously.
If a forced coupling is configured, the following machine constants must also
be specified.
4.14.1 MK_ACHSENART
In this MC, Bit 6 must be set if the synchronous axis is a gantry axis. If this is
the case, there is a mechanical coupling between the master and the slave
axis. For axes with an analog interface this means that the home position
approach is already carried out synchronously. In the case of axes with a
digital interface, the home position approach is merely started
synchronously.
4.14.2 MK_SYNCHRONABWEICHUNG
This machine constant defines the maximum permissible deviation
between master and slave axes position for synchronous error monitoring.
Depending on the axis type, the unit is either millimeters or degrees. This
machine constant is only important if a forced coupling was configured.
4.14.3 MK_SYNCHRONOFFSET
This machine constant defines the distance between the home positions of
master and slave axis in [mm] or [degrees]. It should ideally be 0 in order to
ensure that both axes are already synchronous after the home position has
been reached. The master axis continues to travel by the value which is
entered here after reaching the home position, while the master axis stops
at the home position.