Omron FH-1 series User Manual page 490

10 Advanced Usage
Settings for the Calibration To Execute
Add the following Calibration processing items to the flow.
 Vision Master Calibration
This processing item calculates the axis movement that is necessary to perform the most accurate
calibration within the range of movement of the external device.
This routine is performed repeatedly to create very precise calibration parameters: Output the calcu-
lated axis movement to the PLC, the PLC moves the external device, the PLC sends a measure-
ment command to the FH/FHV/FZ5-series Controller.
Reference the Calibration Data Reference processing item to access the calibration parameters that
were created.
Refer to Vision Master Calibration of the Vision System FH/FHV/FZ5 Series Processing Item Func-
tion Reference Manual (Cat. No. Z341).
Important
If you are using the measurement results of the Sensor Controller to operate an external
device, make sure the movement is within the range of the movement of the external device
before you implement the move.
Additional Information
The Vision Master Calibration processing item has the following advantages over PLC Master
Calibration processing item.
• There is no need for trial and error with the order of movements or axis movement, even with
complicated external devices, such as UVW stages.
The order of movement of the workpiece during calibration and the axis movement of the
external device that corresponds to each movement are automatically calculated.
• Even if you change the calibration conditions, you do not have to change the PLC ladder pro-
gramming.
If you add more sampling points for better precision, or if you reduce the number of sampling
points to shorten the calibration time, you can still use the ladder programming as is.
• In conjunction with calibration, you can also calculate the parameters for distortion correction
at the same time.
This allows you to align positions with even greater accuracy without doing any extra work.
 PLC Master Calibration
The PLC Master Calibration processing item creates calibration data as follows: The axis movement
that is necessary for sampling is calculated in advance. Then, the following routine is repeated: the
PLC moves the external device, it sets the axis movement in the FH/FHV/FZ5-series Controller, and
then it sends a measurement command to the FH/FHV/FZ5-series Controller.
Reference the Calibration Data Reference item to access the calibration data that was created.
Refer to PLC Master Calibration of the Vision System FH/FHV/FZ5 Series Processing Item Function
Reference Manual (Cat. No. Z341).
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Vision System FH/FHV/FZ5 Series User's Manual (Z365)