Gocator Snapshot Sensors: User Manual
How Gocator Works • 41
System Coordinates
Aligning sensors adjusts the coordinate system in relation to sensor coordinates using transformations
(offsets along the axes and rotations around the axes).
Alignment is used with a single sensor to compensate for mounting misalignment and to set a zero
reference, such as a conveyor belt surface.
Y angle is positive when rotating from positive X to positive Z axis.
X angle is positive when rotating from positive Y to positive Z. Z angle is positive when rotating from
positive X to positive Y.
Alignment can be used to establish a transformed coordinate system according to the user's needs.
Alignment determines the adjustments to X, Y, and Z, as well as rotation angle around each axis.
Transformed coordinate systems can be associated with specific sensor jobs. For details, see Alignment
Types on page 93.
Target Alignment Explanation
Flat surface
Z offset
Angle X
Angle Y
System coordinates are aligned such that the system Z axis is
perpendicular to the calibration plate surface. The system Z origin is
set to the base of the calibration plate (using the Z Offset parameter).
Plate (single reference
hole)
X offset
Y offset
Z offset
Angle X
Angle Y
The center of the hole defines the location of the X, Y and Z origins.
The orientation of the surface determines Angle X and Y.
Plate (with two
reference holes)
X offset
Y offset
Z offset
Angle X
The sizes of the primary and the secondary holes must be different.
The center of the primary hole defines the location of the X, Y, and Z
origins. The orientation of the surface determines Angle X and Y. The
direction of the primary and secondary holes determines Angle Z.
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