3 Configuring Axes and Axes Groups
3-20
NJ/NX-series CPU Unit Motion Control User’s Manual (W507)
3-3 Axes Groups
This section describes the axes groups of the MC Function Module.
Use axes groups to perform complex operations on multiple axes, such as linear or circular interpola-
tion. An axes group consists of multiple axes. Use the Sysmac Studio to set Axes Group Variables to
enable execution of axes group motion control instructions or to enable access of the status of the axes
group. The MC Function Module can handle up to 64 groups. The specifications for axes groups are
shown in the following table.
The following elements are related to the axes groups of the MC Function Module.
Precautions for Correct UsePrecautions for Correct Use
Do not configure an axes group with axes on the EtherCAT network and axes on the CPU Unit.
The timing of commands may not be synchronized because the synchronization between the
networks is not performed. This may result in unintended operation.
3-3-1 Introduction to Axes Groups
Item
Specifications
NX701 NX102 NX1P2 NJ-series
Number of axes groups 64 groups max. 8 groups max. 8 groups max. 32 groups max.
Number of composition axes 4 axes max. per axes group
Configuration element Description Page
Axes group parameters The axes group parameters set the maximum interpolation veloc-
ity, maximum interpolation acceleration/deceleration, and other
items for the axes groups controlled by the MC Function Module.
Use the Sysmac Studio to set the axes group parameters.
P. 3-21
Axes Group Variable Axes Group Variables are system-defined variables that include a
portion of the axes group parameters as well as the command
interpolation velocity, error information, and other monitor informa-
tion for the axes groups controlled by the MC Function Module.
Axes Group Variables are created when you add an axes group
from the Multiview Explorer of the Sysmac Studio. The names of
the Axes Group Variables (called the Axes Group Variable names)
are set here.
P. 3-21
Specifying axes groups
in the user program
In the user program, motion control is implemented with motion
control instructions. Motion control instructions that perform multi-
axes coordinated control are used to create axes group com-
mands. To control an axes group with axes group commands,
specify the axes group variable name of the system-defined vari-
able or the axes group variable name that was set with the Sysmac
Studio for the AxesGroup in-out variable of the instruction.
P. 3-24
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