80S-2080F480F4-680F5 User’s Manual.pdf - 第612页

SIPLACE 80S-20/F4/F4-6/F5 User’s Manual 11 Station Extensions/Options Edition 03/98 from Software Version SR.404.xx 11.3 PCB Barc ode 11 - 15 NOTE If you kn ow what bar code you want to pr ocess dur ing start- up, the ba…

11 Station Extensions/Options SIPLACE 80S-20/F4/F4-6/F5 User’s Manual

11.3 PCB Barcode Edition 03/98 from Software Version SR.404.xx

11 - 14

11.3.2 Notes on Safety

CAUTION

The radiant power of the barcode reader‘s scanning beam is less than 1mW. This means that the barcode

reader conforms to laser class 2 and, according to DIN EN 60825-1, requires no special safety equipment or

protective measures. NEVER look into the laser beam. There is also a safety circuit that switches off the laser

diode if the polygon wheel stops or turns too slowly.

11.3.3 How It Works

The barcode reader is a reading device which registers and decodes data presented in the form of bar-cod-

ing. The barcode reader consists of the reading head and the decoder.

The laser diode which is built into the reading head creates a beam of monochrome red light. This is focussed

by a lens and deflected by a rotating polygonal mirror wheel. The signals reflected from the barcoded base

are registered by a photodiode and amplified. This train of electrical impulses which reproduces the sequence

of dark-to-light transitions in the base is then routed to an electronic evaluation device, the decoder.

The decoder consists of two parts: a rapid signal conditioning unit and a processing unit which decodes the

signals and converts them into ASCII format. The data are then routed to a serial interface for further process-

ing.

11.3.4 Parametrization and Adjustment

WARNING

Only personnel who have been trained at Siemens training center for SMD placement machines should be

permitted to carry out parametrization of the barcode reader.

Before a barcode is actually read, the barcode reader must know what kind of code is to be read and how

much data information (number of places) is contained in that code. The barcode reader is furnished with this

information via parametrization. From the structure of the defined code and the number of places it has, the

barcode reader can then calculate the precise number of lines and blanks.

SIPLACE 80S-20/F4/F4-6/F5 User’s Manual 11 Station Extensions/Options

Edition 03/98 from Software Version SR.404.xx 11.3 PCB Barcode

11 - 15

NOTE

If you know what barcode you want to process during start-up, the barcode will be set to your barcode type.

Otherwise the CODE 2/5 interleaved barcode type will be preinstalled. If you want to change your barcode

type, the steps you will need to take for parametrization are described below.

Parametrization takes place using the program SR_INST_LPBC.001.001.

The only actions you should carry out in the menus are the ones described below. All other parameters are

standard values and need not be changed.

Insert the diskette with the SITEST test program into drive A: of the MC computer

Switch the control unit ON

Boot the system with the key combination Strg (Ctrl) + Alt + Entf (Del)

Insert diskette SR_INST_LPBC.001.001 into drive A: of the MC computer

Boot the system with the key combination Ctrl+Alt+Del

The home screen with the main view menu will be displayed.

Press function key F4. A menu for selecting the interface will be displayed.

Select the interface COM 2.

Press the function key F10. This will return you to the main view menu and the interface will be configured

for COM 2.

In the main view menu select < E >

In the Code sub-menu select < 1 >

NOTE

If the sub-menu does not open, there is no communication with the PCB bar code reader unit.

Possible causes: +24 V voltage supply missing, interface interrupted, laser defective.

In the Code type sub-menu select < 1>

Select the code type you want to work with < Customer-specific>

NOTE

When the code type or number of digits is changed both new values will need to be keyed in anew.

Key in the number of digits in the bar code <Customer-specific>

Confirm with < Enter >

NOTE

Specify a single number for the number of digits in the bar code. If you specify a range of numbers, this

may lead to errors.

Quit the menu with < Esc >

Secure the parameters with ’Store permanent’ < 3 >

11 Station Extensions/Options SIPLACE 80S-20/F4/F4-6/F5 User’s Manual

11.3 PCB Barcode Edition 03/98 from Software Version SR.404.xx

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11.3.4.1 Adjusting the Reading Beam

Place the board onto the input board.

The SR_CONF_LPBC.100.001 diskette must still be loaded and the control system be switched on.

Adjust the reading head so that the laser beam can scan the entire bar code when the board is moved by.

At this point note the reading orientation of the bar code.

Switch the read beam ON using the + key on the keyboard.

Move the board over the barcode reader. The bar code which has been read will be displayed on the

screen.

Switch the read beam OFF using the – key on the keyboard.

NOTE

For further details on operating and programming, please refer to the UNIX line computer user's manual.

Please note,

the smaller the reading angle the larger the effective reading length, and the larger this effective line length

is, the more certain reading of the bar code will be.

Fig. 11.3.2 Barcode reading

- Key to Fig. 11.3.2

1 Reading angle 2 Barcode

3 Effective line length