SIPLACE S-23 HM - 第235页
User Manual SIPLAC E S-23 HM 6 Vision functions Software Version SR.406.xx 02/00 US Edition 6. 5 Teach Fiducial 235 The resul ts of fiduci al cente ring ar e indica ted by a c ross. The x and y offset values o f the fid …
6 Vision functions User Manual SIPLACE S-23 HM
6.5 Teach Fiducial Software Version SR.406.xx 02/00 US Edition
234
If you have selected a fiducial the fiducial number and the fiducial name will appear in the display
field. 6
6.5.6.1
Center
Option
If you click on the Center button the Test fiducial menu will close and the video image is shown
on the screen. The picture shows the 2D fiducial structure and the rows and columns profiles of
the 1D structure used for determining precisely the center of the fiducial. Header and footer will
be shown as well. 6
6
Fig. 6.5 - 24 Test fiducial menu, Center video image
The Center function determines via software the center of the fiducial. The parameters for the
function, the edges of the fiducial structure, are selected via a dialog. The system draws edge line
markings as suggestions at possible edge positions. 6
Å With the arrow keys shift the current edge line marking designated in the header.
Å With Return you can accept the position of the suggested edge line marking or the one whose
position you changed. The system will then show you the next edge line marking. The se-
quence in which testing takes place is ’Fiducial edge left’, ’Fiducial edge right’, ’Fiducial edge
top’, and lastly, ’Fiducial edge bottom’. This notation appears in the header.
Edge ok
Fiducial No. = 8 Edge = left
Ret :
Center fiducial
: up
: dn
: right
: left
Fiducial
Result: Centering crosshair
Edge line markings to be shifted
via cursor keys
Row profile of fiducial
Column profile
of fiducial
User Manual SIPLACE S-23 HM 6 Vision functions
Software Version SR.406.xx 02/00 US Edition 6.5 Teach Fiducial
235
The results of fiducial centering are indicated by a cross. The x and y offset values of the fiducial
center will be entered in the fiducial data field. 6
PLEASE NOTE 6
An incorrectly centered fiducial will cause a placement offset. 6
Å Press the Esc key to quit the option and return to the Test fiducial menu.
6.5.6.2 Test Option
If you click on the Test button the Test fiducial menu will close and the video image be displayed
on the screen. 6
6
Fig. 6.5 - 25 Test fiducial menu, Test video image
The dimensions of the pattern structure and search area are stored in the station computer. These
figures are required for calculating the travel path for the corners test. The centering offsets of any
fiducial centering which may already have been carried out will also be taken into account in cal-
culating the travel path. 6
Fiducial No. = 8 Quality fact. = 70Test fiducial
test
1..6 : x/y step
Ret :
x/y step width = ...
: x axis +
: x axis -
: y axis +
: y axis -
6 Vision functions User Manual SIPLACE S-23 HM
6.5 Teach Fiducial Software Version SR.406.xx 02/00 US Edition
236
Following this 6
– the test will be shown on the video display as it runs,
– the header will be shown with the option, the fiducial number and the quality factor, and
– in the footer the operator fields and command sequences will be shown and a test started
which determines the fiducial’s quality factor.
Å By pressing the Return key you can repeat the test procedure.
Å You can change the position of the gantry with the arrow keys. By entering the numbers 1 - 6
you can change the step width.
The PCB camera travels into the 4 corners of the search area, and each time, issues a measure-
ment command. For each measurement command, the machine controller is provided with the fi-
ducial quality by the vision analysis unit (MVS). The worst value (which is the worst case) of the
test is displayed on the screen in the header. 6
The quality value is a figure between 0 (= bad) and 100 (= very good) and should not fall below
the value 40 for the fiducial and the ink dot. If it does, we recommend you choose another fiducial.6