Omron NX701-1 User Manual

3-7
3 Configuring Axes and Axes Groups
NJ/NX-series CPU Unit Motion Control User’s Manual (W507)
3-1 Axes
3
3-1-3 Introduction to Axis Variables
Axis Variables are system-defined variables for some of the axis parameters and for the monitor infor-
mation, such as the actual position and error information, for the axes controlled by the MC Function
Module. When you create axes with the Sysmac Studio, Axis Variables are registered in the variable
table in the order that the axes are created. Axis variables are structures with a data type of _sAX-
IS_REF.
Each Axis Variable in the MC Function Module has two variable names: The Axis Variable name in
the system-defined variables and the Axis Variable name that is assigned when the axis is added on
the Sysmac Studio. The Axis Variable names in the system-defined variables are _MC_AX[0] to
_MC_AX[255], _MC1_AX[0] to _MC1_AX[255], _MC2_AX[0] to _MC2_AX[255].
When you add axes on the Sysmac Studio, the MC_Axis000 to MC_Axis255 are set by default for
_MC_AX[0] to _MC_AX[255]. The numbers are assigned in the order that the axes are added. You
can change each of these Axis Variables as required from the Sysmac Studio. You can use either
the Axis Variables for the system-defined variables or the Axis Variables that are added on the Sys-
mac Studio to specify the Axis Variables in the user program.
 Example When _MC_AX[0-255] Is Used
*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_AX[0-255], _MC1_AX[0-255], and _MC2_AX[0-255] are available for the NX701 CPU
Unit.
Only _MC_AX[0-14] is available for the NX102 CPU Unit.
Only _MC_AX[0-11] is available for the NX1P2 CPU Unit.
Only _MC_AX[0-63] is available for the NJ-series CPU Unit.
• For the NX701 CPU Unit, you can access the same values of _MC_AX[0-255] and
_MC1_AX[0-255] if the axis numbers of them are the same. You can use either of the Axis
Variables, or both of them at the same time.
• The Axis Variable assigned to primary periodic task is _MC_AX[0-255] or _MC1_AX[0-255].
The Axis Variable assigned to priority-5 periodic task is _MC2_AX[0-255].
3-1-3 Introduction to Axis Variables
Axis Variables
Axis Variable name in the system-
defined variables (AT specification
in global variable table
*1
)
Default Axis Variable name when
axis is added on the Sysmac Studio
Axis number example
_MC_AX[0] MC_Axis000 Axis 0
_MC_AX[1] MC_Axis001 Axis 1
.
.
.
.
.
.
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.
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_MC_AX[255] MC_Axis255 Axis 255

Omron NX701-1 Specifications

General

Brand	Omron
Model	NX701-1
Category	Controller
Language	English