西门子SIPLACE S-27 HM用户手册.pdf - 第176页
7 Station extensions User Manual S IPLACE S-27 H M 7.4 PCB barcode Software version SR.503.xx07/2003 US Edition 176 The PCB barcode readers a re fixed to the top a nd botto m profil ed rail us ing retainers . These can b…
User Manual SIPLACE S-27 HM 7 Station extensions
Software version SR.503.xx 07/2003 US Edition 7.4 PCB barcode
175
7.4 PCB barcode
7.4.1 Overview
The PCB barcode reader is used to automatically record and decode barcodes on PCBs. The
PCB barcode reader sends the read data via its serial interface to the machine controller for fur-
ther processing.
The PCB barcode readers are installed on the input side of the placement machine, above and
below the PCB conveyor, so that barcode labels on the topside and underside of the PCBs can
be read.
One or two PCB barcode readers may be retrofitted in order to read the topside and underside of
the PCB on the transport track.
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Fig. 7.4 - 1 Position of the modules on the input side of the placement machine
(1) PCB barcode reading head
(2) Profiled rail for ‘underside’ PCB barcode reader
(3) Profiled rail for ‘topside’ PCB barcode reader
(T) Direction of PCB transport
7 Station extensions User Manual SIPLACE S-27 HM
7.4 PCB barcode Software version SR.503.xx07/2003 US Edition
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The PCB barcode readers 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.
Depending on the position of the barcode strips, the barcode reader can be attached in a few
simple steps so that the strips can be read parallel to or across the PCB transport direction.
7.4.2 Description of the functions
7.4.2.1 PCB barcode reader for the single conveyor
The SIPLACE PCB barcode reader supports the flexible manufacture of SMD products, and
increases placement reliability. It recognizes all the code types conventionally used in industrial
applications.
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 barcode data enables the line computer to
automatically select the correct barcode allocation list from the previously created barcode
assignment 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 is a time-neutral operation that takes
place while a PCB already in the machine is placed. If several PCBs with the same barcode
enter one after another, the program is only sent 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
7.4.2.2 PCB barcode reader for the dual conveyor
On the dual conveyor, the PCB barcode is only used to transfer the barcode via the GEM inter-
face. This is absolutely essential. The placement program cannot be supplied automatically.
User Manual SIPLACE S-27 HM 7 Station extensions
Software version SR.503.xx 07/2003 US Edition 7.4 PCB barcode
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7.4.3 Technical data
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* This value can only be achieved if the barcode label on the PCB passes through the scanner
perpendicular to the machine’s transport direction.
**The position of the barcode scanner on the input conveyor can be easily adjusted, depending
on where the barcode labels are located on the PCBs.
Max. component sizes for the single
conveyor
Standard: (L x W) up to 460 mm x 460 mm
Option: (L x W) up to 508 mm x 460 mm
(same width for all the jobs in a sequence)
Label dimensions Stroke width B: 0.19 < B ≤ 0.3 mm
(corresponds to high and medium density)
Stroke length: ≥ 4 mm*
Length of the barcode template window ≤ 90 mm
Label alignment on the PCB ** Parallel or perpendicular with respect to the PCB
transport direction, as close as possible to the sta-
tionary PCB transport side.
Label colors (contrast ratio > 70% to
DIN 66236)
Coding: black, dark green, dark blue
Background: white, beige, yellow, orange
Code types Code 39, Code 128 / EAN 128,
Codabar, 2/5 IATA 2/5 industrial,
2/5 interleaved, UPC, EAN,
Pharma Code, EAN Addendum
(others available upon request)
Complete barcode Up to 25 digits (a barcode filter can also be defined)
Laser scanner safety Laser diode 670 nm (red) / 1.2 mW
Laser protection class 2, type of protection IP65
Station and line software Version 502.xx or later
Scanning / analysis duration Time neutral (T ≤ 1 s), since it is carried out in parallel
to placement of the previous PCB