Omron FH-1 series User Manual page 487

Using Alignment
 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.
Stage
 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.
Stage
Vision System FH/FHV/FZ5 Series User's Manual (Z365)
Camera 1
Camera 0
Camera 1
Camera 0
Movement command to reference position
10 Advanced Usage
Sensor Controller
: Stage coordinates
: Camera coordinates
PLC
Sensor Controller
Calibration Data Reference
Alignment calculations
Calculation and
output of the required
axis movement
Result output
PLC
10
Association
(Execution of
calibration)
10 - 51