UMAX0608XX‐1000. Tri‐Axial J1939 CAN Inclinometer. Version 9B
Page: 31-66
are rotated the way that the Y-axis points towards the viewer, X-axis points right, and rotation
about the Y-axis gives the required pitch angle according to the right-hand rule, see
Unit
Coordinate System
.
To convert the original unit frame orientation into the required one, perform (0,0,-90°)
coordinate system rotation, see Figure 15.
X
Y
Z
X
Z
Y
Original Unit Frame
Orientation (printed
on the label)
Unit Frame
Orientation After
Rotation
Roll angle
rotated by ‐90°
Z points away from the
viewer
Y points towards the
viewer
Figure 15. Unit Frame Orientation Example. Coordinate System Rotation
In the same way, a horizontal mounting unit AX060800 can be converted into a vertical
mounting unit AX060808 (now legacy p/n), with a different original unit frame orientation, using
(90,90,0) coordinate system rotation, see Figure 16.
X
Y
Z
Pitch Angle
Required AX060808 Unit
Frame Orientation
Front View
X points towards the
viewer
Roll Angle
X
Y
Z
X
Z
Y
Original AX060800 Unit
Frame Orientation (printed
on the label)
AX060808 Unit
Frame Orientation
After Rotation
Yaw angle
rotated by 90°
Z points away from the
viewer
Pitch angle
rotated by 90°
Y
Y
Z
X
X points towards the
viewer
Figure 16. Unit Frame Orientation Example. Conversion AX060800 into AX060808
Do not forget to change the
Pitch and Roll Angle Type
in the
Angle Measurement
function
block to
Euler Angle
in this example to get the ±180° roll angular range, the default value for
AX060808.
