RS-1_instruction manual.pdf - 第946页
Part 2 D etaile d Descript ion of E ach Functi on Chapter 12 Handling th e Optional Device s 12 - 62 12.11.7.2 Entering a mark coordinate Enter coor dinates of two or three comp onent pla cement positions t o recogn i ze…
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12.11.7 Program Editor
12.11.7.1 Setting a Solder Mark
Align the cursor with the “Mark Type” column of the area fiducial mark data, and click it with the right
button to select the mark type. You can specify up to 50 sets of area fiducial marks to be used for
recognizing screen-printed solder including normal marks. In addition, one set of solder
screen-printing positions can be registered at up to three positions. By default, a mark ID for
recognizing solder starts to be registered from [S001]. You can change this registered ID. When
you create a production program, you cannot register a solder recognition mark at a position on
which a component is already placed. Therefore, you have to set the solder mark layer to the last
layer.
Mark
Conventional area fiducial mark (default)
Solder
Solder mark per circuit
Solder (PWB)
Solder mark in the reference circuit coordinate system (for a multi-plane
board)
Select [Solder (PWB)] to recognize a pair of screen-printed solders on a multi-plane board to correct
misalignment. This selection enables you to register a coordinate outside the reference circuit,
and correct all circuits on a multi-plane board also based on the result of recognition of a pair of
screen-printed solders. Enter the recognized coordinates in the reference circuit coordinate
system. Note that you cannot set both [Solder] and [Solder (PWB)] as a mark type in one
production program.
When the system recognizes
screen-printed solder, “S” appears
before the mark ID by default.
Reference circuit
Enter the recognized
coordinates in the reference
circuit coordinate system.
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12.11.7.2 Entering a mark coordinate
Enter coordinates of two or three component placement positions to recognize solder in the “Mark X”
and “Mark Y” columns when you select [Solder] as the “Mark Type.”
However, when you select [Solder (PWB)] as the “Mark Type,” you can enter a coordinate value in
the reference circuit coordinate system even though it is outside the reference circuit.
12.11.7.3 Teaching
Adjust the cursor to the [TI] position and press the [Teaching] button in the operation area. Then,
execute solder teaching.
* The brightness of positions to be taught may vary because solder is used. Therefore, perform
not the Vision Copy function but the mark teaching operation.
(1) Light adjustment
While checking the VCS monitor, adjust each parameter: [Vertical Light], [Solder Light] and
[Contrast Pattern] so that the contrast between the screen-printed solder and a board can be
good.
Enter the desired value into the edit box directly or select the arrow mark located on the right
side of the edit box to change each parameter.
The setting of the [Vertical Light] mainly affects the brightness of a pad or resist section
of a board, and the setting of the [Solder Light] mainly affects the brightness of solder.
* When the system recognizes screen-printed solder, it converts the luminance of the
portion whose luminance is high such as an electrode pattern of a board to “0.”
Therefore, the system adjusts the parameters of the [Vertical Light] item and the
[Solder Light] item so that the luminance of the electrode pad section can look
highest, that of solder can look moderate, and that of other portions can look dark.
* If there are black spots (whose luminance is “0”) on the screen-printed solder due to
roughness of the surface of the screen-printed solder when the system adjusts a
binary threshold or recognizes the solder, set the luminance of the light so that it can
be darker than the set luminance.
* The setting of the [Contrast Pattern] item is a parameter that changes the sensitivity
of a camera. If the recognition condition cannot be improved by adjustment of the
lights, it allows the system to select the number that makes the contrast between the
screen-printed solder and the board good.
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You can continue teaching, and use the automatic adjustment function on the “Set Solder
Recognition Parameter” screen in order to set the parameters automatically.
After adjustment, select the <OK> button. The system updates the adjustment value and
goes to the next process.
When you select the <APPLY> button, the adjustment value is updated. When you select
the <CANCEL> button, the system stops teaching.
- Example of recognition images (Left: Too bright, Center: Good, Right: Too dark)
(2) Setting a binary threshold value
Use the upper and/or lower arrow key to adjust a binary threshold value so that only solder
displayed on the monitor can look bright.
Like the outline of the electrode pad displayed in the Figure 12.12.8.6, any gloss of about one
pixel other than solder will not affect recognition of solder.
You can continue teaching, and use the automatic adjustment function on the “Set Solder
Recognition Parameter” screen to set a parameter automatically also.
If you cannot adjust the threshold value easily, use the PERVIOUS key to return to the light
adjustment screen and readjust the light.
Solder
Electrode pad
Resist section of a board
If the thickness of the
outline is about one pixel,
it will not affect
recognition of solder.