Configuration Of A Multi-Axis Group - Fagor CNC 8060 Installation Manual

2.3.5
2.
CNC 8060
CNC 8065
(R : 1709)
EF
·74·

Configuration of a multi-axis group.

MULTIAXIS
Table of multi-axis groups.
A multi-axis group may be used to control several axes with a single drive, controlling one
or more motors. This parameter shows the multi-axis group definition table for defining the
number of groups of the system and the composition of each group.
MULTIAXIS
MULNGROUPS Number of multi-axis groups in the system.
GROUP n Multi-axis groups.
Requirements and limitations of a multi-axis group.
The axes associated with the same drive must meet the following requirements.
• Any Sercos axis of the system may be part of a multi-axis group, except those that belong
to gantry or tandem axes.
• Since the axes are controlled by the same drive, all the axes of a group must have the
same Sercos address (parameter DRIVEID).
• All the axes of a group must work in the same Sercos operating mode, position or speed,
(parameter OPMODEP). If the external feedback (direct feedback) of the axis is
connected to a drive, the axis may be operated in either position-Sercos mode or velocity-
Sercos mode (velocity-Sercos mode is recommended). If the external feedback (direct
feedback) of the axis is connected to local or remote feedback input, the axis can only
work in velocity-Sercos mode.
• If the external feedback is local or remote, the CNC homes the axis as if it were analog;
the drive does not know that the axis has been homed and does not update its position
value, it only receives the velocity command. If the external feedback is connected to
another drive, it will not be possible to home the axis.
• The axis being governed by the drive is selected via PLC (mark SWITCH(axis)). The PLC
must either park the axes not governed by the drive or set them as DRO axes.
• The CNC keeps monitoring (following error, tendency test, etc.) all the axes sharing the
drive even if the axis is not selected.
MULNGROUP
Number of multi-axis groups in the system.
Possible values: From 0 to 16.
Default value: 0.
Associated variable: (V.)MPG.MULNGROUP
Parameter included in the MULTIAXIS table.
This parameter sets the number of multi-axis groups of the system.
GROUP n
Multi-axis groups.
This parameter shows the parameter table to define each multi-axis group. The table shows
a GROUP_n parameter for each multi-axis group with the following machine parameters for
configuring the groups.
GROUP n
MULNAXIS Number of axes and/or spindles making up the multi-axis
group.
MULNAXISNAME n Name of the axes and/or spindles of the group.
KEEPPOS n The deactivated axis maintains its coordinate regardless of
the active axis.
I n s ta ll a t io n ma n u a l.