Introduction To Axes Group Variables - Omron NX701-1 User Manual

3 Configuring Axes and Axes Groups
3-3-3

Introduction to Axes Group Variables

Axes Group Variables are system-defined variables for the setting information and the monitoring infor-
mation, such as the actual position and error information, for the axes groups controlled by the MC
Function Module. When you create axes groups with the Sysmac Studio, Axes Group Variables are
registered in the variable table in the order that the axes groups are created. Axes Group Variables are
structures with a data type of _sGROUP_REF.
Axes Group Variable Names
Each Axes Group Variable in the MC Function Module has two variable names: The Axes Group
Variable name in the system-defined variables and the Axes Group Variable that is assigned when
the axes group is added on the Sysmac Studio. The Axes Group Variable names in the system-
defined variables are _MC_GRP[0] to _MC_GRP[63], _MC1_GRP[0] to _MC1_GRP[63],
_MC2_GRP[0] to _MC2_GRP[63].
When you add axes groups on the Sysmac Studio, MC_Group000 to MC_Group063 are set by
default for _MC_GRP[0] to _MC_GRP[63]. The numbers are assigned in the order that the axes are
added. You can change each of these Axes Group Variable names as required from the Sysmac
Studio.
You can use either the Axes Group Variable names for the system-defined variables or the Axes
Group Variable names that are set on the Sysmac Studio to specify the Axes Group Variables in the
user program.
 Example When _MC_GRP[0-63] Is Used
Axes Group Variable name in the
system-defined variables (AT speci-
fication in global variable table
_MC_GRP[0]
_MC_GRP[1]
.
.
.
_MC_GRP[63]
*1 An error will occur if you change the names in the AT column in the global variable table on the Sysmac Studio.
Additional Information
• _MC_GRP[0-63], _MC1_GRP[0-63], and _MC2_GRP[0-63] are available for the NX701
CPU Unit.
Only _MC_GRP[0-7] is available for the NX102 CPU Unit and NX1P2 CPU Unit.
Only _MC_GRP[0-63] is available for the NJ-series CPU Unit.
• For the NX701 CPU Unit, you can access the same values of _MC_GRP[0-63] and
_MC1_GRP[0-63] if the axes group numbers of them are the same. You can use either of
the Axes Group Variables, or both of them at the same time.
• The Axes Group Variable assigned to primary periodic task is _MC_GRP[0-63] or
_MC1_GRP[0-63].
The Axes Group Variable assigned to priority-5 periodic task is _MC2_GRP[0-63].
3-22
Default Axes Group Variable name when
axes group is added on Sysmac Studio
*1
)
MC_Group000
MC_Group001
.
.
.
MC_Group063
NJ/NX-series CPU Unit Motion Control User's Manual (W507)
Axes group number
example
Axes group 0
Axes group 1
.
.
.
Axes group 63