VI User Manual - 第45页

Maintenance mode Vision 2007 4.10 User Manua l Rev 01 2 - 9 Calibration c heck ( G ). Focus ( H ): check camera focus. 2.1.5 Open report This function allows you to read the previous machine check reports found in C:/VIT…

Maintenance mode

2 - 8 Vision 2007 4.10 User Manual Rev 01

Axis angle (A): check the angle and the linearity of the XY axes.

Axis step (B): check the pitch of the XY axes.

Balance of axis

(

): check that the camera movement direction does not affect the measurement.

Accuracy (D): check measurement accuracy: points on the calibration tool are measured and

are used to obtain the average and the standard deviation between the measured position and

the theoretical position.

Repeatability (E): check average, standard deviation and capability (0.2/6 standard deviation)

of the machine.

Calibration (F):

 Pixel size.

 Ratio between pixel size in X and Y.

 Angle between the camera and its holder.

 Skew: parallelism between the camera plane and the calibration tool.

 Residual max.: maximum distortion on the calibration matrix.

 Residual average: average distortion on the calibration matrix.

Test machine

Maintenance mode

Vision 2007 4.10 User Manual Rev 01 2 - 9

Calibration check (G).

Focus (H): check camera focus.

2.1.5 Open report

This function allows you to read the previous machine check reports found in C:/VIT/report.

2.1.6 Manual load

Outputs (A): each of the 5 buttons enables you to

activate one of the items listed.

Panel Load/uUnload (B): click on the Load/Un-

load button to automatically load and unload the

board.

Test failure is clearly marked in the report (yel-

low text fields for off-limit values and red text

fields for failed measurements, that are normally

due to unsuitable lighting or a dirty glass-plate).

The reasons for failed axes balance are:

 Holding the camera in the wrong position.

 Vibrations at lens level.



Incorrect fastening of the lens protective cover.

The reasons for failed accuracy are:

 Wrong axis angle.

 Wrong axis step.

The reasons for failed repeatability are:

 Vibrations at camera level.

 A dirty calibration tool.

If the calibration check fails, it means that calibration parameters in the memory do not match

the physical conditions of the camera. In this case, recalibrate the pixel size with the Calibra-

tion menu.

Test machine

Maintenance mode

2 - 10 Vision 2007 4.10 User Manual Rev 01

2.2 Parameters

1. Click PARAMETERS button in the MODE MAINTENANCE menu to bring up the MACHINE PA-

RAMETERS window.

2. Click the tab to access the parameters that you want to view or modify.

3. Click OK button to confirm the values entered by default or the changes made and return to the

MODE MAINTENANCE menu.

4. Click Cancel button to leave the current procedure or return to the MODE MAINTENANCE menu.

2.2.1 Conveyor tab

The XY conveyor references (A) are the distances between the axes 0 (position after initial-

ization) and the machine 0 (stop). If you change the position of the stop, these values must be

changed accordingly.

Tick Smema Acknowledge (B) to wait for acknowledgement of the downstream machine

(board received OK) in order to unload another board.

Tick Reverse Smema (C) to send the ready to send information to the downstream machine,

as soon as the output sensor is activated.

Tick Automatic passthrough mode (D) box to place the AOI system in the automatic

passthrough mode (by-pass).

If you have a fiducial or bar code error in production, the board will be sent to the down-

stream machine without any message.