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10 Advanced Usage
Vision System FH/FHV/FZ5 Series User’s Manual (Z365)
10-9 Positioning workpieces for stage and
robot applications [Alignment Function]
10
10-9-1 Overview
Calibration
The Camera and external device both have their own coordinates, so it is necessary to calculate the
relationship of the coordinates of the Camera and the external device in advance. This process is
called calibration.
The FH/FHV/FZ5-series Controller uses the external device to move the workpiece and measure it.
This is repeated to calculate the calibration parameter.
Alignment: Aligning the Position of the Workpiece
The image taken by the Camera is used to measure the position of alignment marks on the work-
piece, or the position of specific features of the workpiece (such as corners) in Camera coordinates
(pixels). The calibration parameter that is calculated in the calibration flow is used to convert the
measured position into the coordinates of the external device. Finally, the axis movement that is
required to match the measured position to the reference position angle is calculated and output to
the external device.
Using Alignment
Sensor Controller
PLC
: Stage coordinates
: Camera coordinates
Association
(Execution of
calibration)
Stage
Camera 1
Camera 0
Camera 1
Camera 0
Sensor Controller
PLC
Alignment calculations
Calibration Data Reference
Result output
Movement command to reference position
Stage
Calculation and
output of the required
axis movement
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