Barcode Reading
The Barcode Reading tool allows you to configure barcode reading options.
Set your Region of Interest (ROI) by resizing and rotating the rectangle. To configure barcode reading, set the following parameters:
| Setting | Description |
| Timeout |
The Timeout value specifies a fixed amount of time the device attempts to decode any symbol it detects. If the device is unable to decode the symbol within this timeout period, it returns a NoRead status as if the image contained no detectable symbol. Performance can decrease if you do not specify a timeout, as the device attempts to decode any code candidates in the current image before moving on to the next. The default value is 50 milliseconds. |
| Code read per trigger |
The Codes read per trigger value specifies the number of codes the device has to read during a trigger. Enable the Allow partial results checkbox to make the device report a Good Read even if it could not find all the codes set up under the Number of codes. |
| Max code per symbology |
The Max code per symbology value specifies the maximum number of each code type the device has to read during a trigger. For example, if you enable Data Matrix code and set the Codes read per trigger to two and the Max code per symbology is set to one, the device still reads one code. |
| Code re-read delay |
The Code Re-Read Delay option lets you specify the delay between attempting to read the same code again. Specifying a non-zero value can help prevent data from overwhelming an external device connected to your SLX device. If your device is in One Time trigger mode, you can configure a re-read delay to avoid repeated outputs for the same code until it exits the Field of View. If the same code is presented before this time runs out, the device returns a NoRead. |
| Filtered code count for good read |
The Filtered code count for good read lets you specify how many barcodes the device must read to report a Good Read when using a filter. If the device reads fewer barcodes than the specified count, it is a No Read. This parameter is useful, for example, when an object has multiple barcodes with the same symbology, but only one specific code is relevant. You can set this option to 1, and configure a barcode filter so the device only reports that code. If the device reads the filtered code, the result is a Good Read. For more information about configuring barcode filters, see Using Barcode Filters. |
| Don't re-read last N codes |
The Don't Reread Last N Codes option prevents the device from reading codes that were read in the last N number of reads. You have to provide N, otherwise, if the number is 0, the option is disabled. The option applies to all read codes within one trigger sequence. |
| Manage Symbology |
Click the Manage Symbology button to specify the barcode symbologies the device must look for. The available selection of 1D or 2D codes is determined by the Code Information setting in Application Details substep. Disabling unused symbologies can improve the performance of your device. The list of available 1D codes:
The list of available 2D codes:
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