FUJI NXT Programming Manual QD004-18.pdf - 第121页
QD004-18 4. Part Data Settings NXT Programming Manual 111 P_pattern 33, 34 These cannot be used on the NX T. Basically, these types are the same as the types 23 and 24. The major difference is that with th ese p_patterns…
4. Part Data Settings QD004-18
110 NXT Programming Manual
P_pattern 23, 24
These cannot be used on the NXT. The lead tip and width are detected and the results are
used to determine the part position similar to p_pattern types 3 and 4. The major difference
is that with these p_patterns, the color of the points on the lead at which the lead tip and
lead width are detected are opposite.
• Type 23: The lead tip appears white, while the lead body appears black. The
lead tip half of the outside circumference is black, while the body half is white.
• Type 24: The lead tip appears black, while the lead body appears white. The
lead tip half of the outside circumference is white, while the body half is black.
These are primarily used for parts with J-leads on one side or two opposing sides.
With parts that have J-leads on two perpendicular sides or more, the lead width direction is
only required for determining the positioning, therefore it is recommended to select a
different p_pattern (type: 33, 34) that matches the processing conditions.
Example Target Parts
Type 23: Currently no example target part exists.
Type 24: SOJ parts processed with frontlighting with a white background.
NXTVPP019E
:Entered element position
:Defined element direction
Type 23 Type 24
QD004-18 4. Part Data Settings
NXT Programming Manual 111
P_pattern 33, 34
These cannot be used on the NXT. Basically, these types are the same as the types 23
and 24. The major difference is that with these p_patterns, the lead tip is not used for
determining the part positioning. The lead width detection results only are used to
determine the part positioning. The lead tip detection results are used only as reference
data for internal vision processing items.
• Type 33: The lead tip appears white, while the lead body appears black. The
lead tip half of the outside circumference is black, while the body half is white.
• Type 34: The lead tip appears black, while the lead body appears white. The
lead tip half of the outside circumference is white, while the body half is black.
It is only possible to use this for parts that have leads that are to be detected on two
perpendicular sides or more.
Furthermore, the information for the part positioning using the lead length is not acquired
so these types cannot be used for parts with leads on one side or two opposing sides only.
Example Target Parts
Type 33: Currently no example target part exists.
Type 34: PLCC parts processed with frontlighting with a white background.
NXTVPP020E
:Entered element position
:Defined element direction
Type 33 Type 34
4. Part Data Settings QD004-18
112 NXT Programming Manual
4.5.4 Selecting a p_pattern flowcharts
For frontlight leaded parts
NXTVPP021E
Vision Type for a leaded part is selected
What is the lead shape?
Lead or Pad
J-lead
How are the elements
arranged?
What is the background
color?
Not supported
on the NXT
1 side only or
2 opposing sides?
2 Perpendicular sides
or 3 or 4 sides.
How are the elements
arranged?
Which way do
the leads extend and what
is the detection status?
Black
Body
Extend out and
Detection stable
P_pattern:
6
P_pattern:
14
P_pattern:
16
P_pattern:
12
P_pattern:
4
Body
Extend in and
Detection stable
End detection
is unstable
2 Perpendicular sides
or 3 or 4 sides.
1 side only or
2 opposing sides?
P_pattern:
4
P_pattern:
12
Body
Extend in and
Detection stable
Body
Extend out and
Detection stable
Which way do
the leads extend and what
is the detection status?
White