USB Barcode Scanner Application Integration Guide 2006
USB Barcode Scanner Application Integration Guide 2006 Ranking & Summary
USB Barcode Scanner Application Integration Guide 2006 description
SB Barcode Scanner Application Integration Guide 2006 offers users documentation, examples, software and VB6 source code for the integration of hand-held USB and keyboard emulation barcode scanners.
Using these guidelines, hand held scanners may be easily combined with existing or custom applications as automation, input and verification devices.
This guide includes:
- Overview and Information about RS232 Scanners
- RS232 (serial port) barcode scanners have been commonly used as input devices for several decades. RS232 scanners work very well in their legacy applications, although their implementation is complex because it requires that the application monitor and access the RS-232 API. In addition, some new computer systems on the market today do not contain RS232 ports and the serial port is a slow communication device. USB and keyboard wedge barcode scanners overcome these limitations by emulating the keyboard so that anything scanned appears at the cursor as if it had been typed in from the keyboard. The guidelines presented here offer several implementation options.
- Methods of Scanning Data into Applications:
- Scan Data Directly into the Field of a Form
- Scanning data directly into a field is the easiest of all implementations. The cursor is placed in the appropriate field that is to receive the data from the scan and the trigger is pressed on the scanner. After the trigger is pressed, the data appears at the cursor as if it had been typed from the keyboard. This method may also be automated to include functions such as tabs and returns - even in web browsers and custom applications.
- Program an Application to Monitor for Specific Characters that Trigger an Operation
- With this implementation, the cursor may be anywhere on the form. The application is programmed to respond to a specific character that is not frequently used. In this example, Visual Basic 6 is used to respond to the tilde "~" character. However, applications may be programmed to respond to any character that is not used for any other purpose in the application.
- Program a Preamble in the scanner to Trigger an Operation
- Most modern scanners, such as the IDAutomation SC5 USB Barcode Scanner, have the ability to encode preamble characters. IDAutomation recommends using the GS character, which is ASCII 29 for this operation.
- Program the Scanner to Simulate a Function Key
- Very few Keyboard Wedge or USB Scanners can simulate pressing a function key from the keyboard. However, if this operation is needed, the IDAutomation SC5 USB Barcode Scanner can emulate all function keys as well as other keys such PgUp, PgDn, Backspace, Tab, Enter, Esc, Insert, Delete, Home and End. To activate this ability, simply enable "Function Key Emulation Mode" by scanning the appropriate barcode in the manual. Using this method, lower ASCII codes in a Code 128 barcode will simulate pressing a key on the keyboard. For example, an ASCII 23 (0x17 in the manual) digit encoded in a bar-code will send the same codes to a computer as if the F7 function key was pressed. Because the scanner manual only lists hexadecimal numbers, it may be necessary to refer to the ASCII chart for conversions.
- Download the Demo Application
- Testing the Trigger Process
- The trigger process may easily be tested with a barcode scanner and the sample application. If the sample application example fails to execute, the VB 6 runtime files may need to be installed. Scan the barcodes below with the application open for an implementation example. The bar-codes below encode a tilde at the beginning. Most modern scanners, such as the IDAutomation SC5 USB Barcode Scanner, automatically send a return function by default after the data is scanned. Therefore, a return function at the end of the barcode may not need to be encoded. The barcodes below may be reproduced with any of IDAutomation's barcode applications, barcode font tools and barcode components including the free online barcode image generator.
- Automate Scanning with Functions, Tabs or Returns
- Scanning may be automated to include functions such as tabs and returns - even in web browsers and custom operating systems. Tabs and returns may offer additional automation possibilities. For example, a single barcode may enter data in one field, tab to another, enter more data and choose the default button (a return) to perform a record lookup. The functions may be programmed into the barcode scanner or encoded directly in the barcode itself. Information about encoding tabs and returns into barcodes is available in the Code 39 FAQ and the Code 128 FAQ.
- Hand-Held and USB Barcode Scanners
- IDAutomation offers many easy-to-use handheld and USB barcode scanners including:
- IDAutomation SC5 USB Barcode Scanner
- IDAutomation Wireless Barcode Scanner
- USB Barcode Scanners
- Barcode Wands (wands scan wider barcodes, up to 60 characters)
- Laser Barcode Scanners
- Software for the Printing of Barcodes. IDAutomation offers many products that print and/or create barcodes including:
- Barcode ActiveX Controls - easy to use add-ins for Microsoft Access, Excel, VB and C++.
- .NET Barcode Forms Controls - create and print barcodes from Microsoft Visual Studio.NET applications. Also generates images that can be saved to a file.
- ASP Barcode Server for IIS - add barcodes to any web application with this component for Microsoft IIS.
- ASP. NET Barcode Web Controls - for creating bar codes in VB .NET or C# .NET web applications.
- Barcode Fonts - allow easy creation of barcodes in several different applications.
- Barcode Label Design Software - allows easy printing of barcodes with database support.
- Hosted Barcode Services - allow dynamic creation of barcodes without installing any software.
- Barcode Image Generators - easily create barcode images for almost any Windows application.
- Java Servlets, JavaBeans, Class Libraries & Applets - create barcodes on any operating system with a JVM.
- Barcode Inventory & Asset Management Software Guide
Requirements: USB port
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