SM482PLUS_Admin(Eng_Ver2.8).pdf - 第139页

6-21 Board Definition 6.3. Fiducial Mark Setup If there is a fiducial mark on the PCB, set th e position of the fiducial mark and mark data. The fiducial mark is the mark on the PCB us ed for recognition of the PCB disto…

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Multi-Functional Placer SM482(L) PLUS Administrator’s Guide

 <Array Skip/Work Tools> group

 All Skip: Set “Skip” for all of the array PCBs.

 All Work (No Skip): Release ‘Skip’ settings for all of the array PCBs.

 Skip: Set the ‘Skip’ for the array PCB having the number that is inputted in the

‘Array No’.

 Work Release ‘Skip’ setting for the array PCB having the number that is inputted

in the ‘Array No’.

 <Update> button

Saves the edited data and closes the screen.

 <Cancel> button

Closes without saving the edited data.

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Board Definition

6.3. Fiducial Mark Setup

If there is a fiducial mark on the PCB, set the position of the fiducial mark and mark data.

The fiducial mark is the mark on the PCB used for recognition of the PCB distortion and

its correction. In the case of the PCB without fiducial mark, the placement accuracy is

relatively low.

When this <Fiducial Mark…> button is clicked on, the following dialog box is displayed.

Figure6.4 “Fiducial Position & Mark” dialog box

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Multi-Functional Placer SM482(L) PLUS Administrator’s Guide

 <Block Select> combo box

 For a Multi PCB

The model selected from the “Board Definition” dialog box is selected

automatically and the corresponding Combo Box is disabled.

 For a Block PCB

Select the model for which setup will be performed and set other items.

 <1. Position Type> combo box

One, two or three fiducial marks can be selected for use.

When one fiducial mark is selected, the X and Y distortion can be corrected. However,

it is difficult to correct the theta angle.

That is, it is used if the external machined section of the PCB is very precise or when

there is only one fiducial mark inevitably. Generally, 1 point fiducial is not used.

In the case of 2 fiducial marks, the X, Y and theta of the PCB can be corrected. This is

the most frequently used method.

In the case of 3 fiducial marks, they are used when the deviation of the score value is

great because the surface of the fiducial marks is unstable. If 3 fiducial marks are used,

the machine can calculate the horizontal and longitudinal position more accurately.

Here, Select the number of fiducial marks. Available numbers are as follows.

 None: Fiducial Mark.

 1 Panel: In the case of one point, the distortion of the X or Y coordinate can

be compensated.

 2 Panel: 2 fiducial marks for PCB correction.