# *SYSTEM

 Specify a local coordinate system in which to define nodes. This option is used to define nodes by accepting coordinates relative to a specified local rectangular coordinate system and generating the nodal coordinates in the global coordinate system.
 Related Topics In Other Guides Node definition

ProductsAbaqus/StandardAbaqus/ExplicitAbaqus/CAE

TypeModel data

LevelPartPart instance

Abaqus/CAENot applicable; instancing a part in the Assembly module creates a local coordinate system.

## Data lines to define a local coordinate system

First line
1. $Xa$, global X-coordinate of the origin of the local coordinate system (point a in Figure 1).

2. $Ya$, global Y-coordinate of the origin of the local coordinate system.

3. $Za$, global Z-coordinate of the origin of the local coordinate system.

4. The following entries are not needed for a pure translation:
5. $Xb$, global X-coordinate of a point on the $X1$-axis of the local coordinate system (point b in Figure 1).

6. $Yb$, global Y-coordinate of a point on the $X1$-axis of the local coordinate system.

7. $Zb$, global Z-coordinate of a point on the $X1$-axis of the local coordinate system.

Second line (optional; if not provided, the Z-axis direction remains unchanged, and the $X1$-axis is projected onto the $(X, Y)$ plane)
1. $Xc$, global X-coordinate of a point in the $(X1, Y1)$ plane of the local coordinate system, on the side of the positive $Y1$-axis (for example, point c in Figure 1).

2. $Yc$, global Y-coordinate of a point in the $(X1, Y1)$ plane of the local coordinate system, on the side of the positive $Y1$-axis.

3. $Zc$, global Z-coordinate of a point in the $(X1, Y1)$ plane of the local coordinate system, on the side of the positive $Y1$-axis.

Figure 1. Local coordinate system.