X3_X4_Series machine - 第417页

User manual SIPLAC E X-Series 7 Station extensions Software Vers ion SR.601.xx 11/ 2005 US Ed ition 7.5 PCB barcode scanner 417 7.5 PCB barc ode scanner Item no. 001 196 82-xx 1D PCB bar code s canner Item no. 001 196 79…

7 Station extensions User manual SIPLACE X-Series

7.4 Multicolor PCB camera, type 24, digital Software Version SR.601.xx 11/2005 US Edition

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7.4.3 Type of illumination

The following types of illumination can be selected on the multicolor PCB camera:

– White lighting

This type of illumination is used for standard PCBs with tinned fiducials.

– Blue oblique lighting

In most cases, this can be used to greatly improve the contrast with bright fiducials on a light

base material, such as ceramic or CEM. Fiducials covered with solder resist can also be de-

tected better on a light background.

– Infrared lighting

This type of illumination is particularly useful for fiducials that are covered with solder resist

or for fiducials on flex materials. It is also sometimes possible to improve detection of silver/

platinum fiducials on ceramic. This should be tested by carrying out a test centering or place-

ment run.

7.4.4 Fiducial and ink spot criteria

The fiducials and ink spot criteria are described in sections 3.11.5.3 and 3.11.5.4, page 162.

User manual SIPLACE X-Series 7 Station extensions

Software Version SR.601.xx 11/2005 US Edition 7.5 PCB barcode scanner

417

7.5 PCB barcode scanner

Item no. 00119682-xx 1D PCB barcode scanner

Item no. 00119679-xx 2D PCB barcode scanner

Item no. 00119684-xx PCB barcode scanner assembly kit

7.5.1 Overview

The PCB barcode scanner is used to automatically record and decode barcodes on PCBs. The

PCB barcode scanner sends the read data via its serial interface to the transport controller and

then for further processing to the machine controller via the CAN bus.

Fig. 7.5 - 1 PCB barcode block diagram

The PCB barcode scanners are installed on the input side of the placement machine on the PCB

conveyor. Up to four devices can be retrofitted to each machine. The barcode scanners are fitted

so that the barcode labels on the topside and underside of the PCBs can be scanned on both

tracks of the dual conveyor.

There are two variants of the barcode scanner:

– 1D barcode scanner

This barcode scanner processes barcodes. 7

– 2D barcode scanner

Device number

Barcode

scanner

topside

Distribution

board

Transport

controller,

right

Barcode

scanner

underside

Barcode

scanner

topside

Distribution

board

Transport

controller,

left

Barcode

scanner

underside

Machine

controller

Station

computer

SIPLACE Pro

computer

LAN

CAN

bus

V-24V-24

7 Station extensions User manual SIPLACE X-Series

7.5 PCB barcode scanner Software Version SR.601.xx 11/2005 US Edition

418

This barcode scanner processes matrix code. Matrix code is primarily used when there is

not enough space for barcode labels. The 2D barcode scanner also reads conventional bar-

codes. 7

Fig. 7.5 - 2 1D and 2D barcode scanners

The PCB barcode scanners are fixed to the top and bottom profiled rail using retainers. These can

be positioned as required on the profiled rails, and aligned with respect to the barcode labels. De-

pending on the position of the barcode strips, the barcode scanner can be attached in a few simple

steps so that the strips can be read parallel to or across the PCB transport direction.

7.5.2 Description of the functions

The SIPLACE PCB barcode scanner supports the flexible manufacture of SMD products, and in-

creases placement reliability. It recognizes all the code types conventionally used in industrial ap-

plications.

The laser scanner reads the barcode label on the topside or underside of each incoming PCB as

they are transported onto the input conveyor. The SIPLACE Pro computer uses the barcode in-

formation to automatically select the right placement program from the previously created barcode

assignment list (BA list), and sends it to the station. If a barcode filter is defined, only information

that is identified as relevant within the barcode is compared. This procedure is carried out time

neutrally during placement of the PCB already in the machine. If several PCBs with the same bar-

code enter in succession, the program is only transferred the first time. The following requirements

apply to all products to be produced using the PCB barcode:

– The component set-up must be identical on all the machines on the line

– All PCBs must be of the same width