Reading and verifying moving codes can sometimes be problematic, particularly if they are fast-moving, inverted or reflected.
Leuze has resolved this with its new smart LSIS 422i camera, which reads dot-peened, laser-etched and printed codes. The smart cameras are characterised by motor driven focus adjustment, uniform illumination of free-form surfaces and connection technology suitable for industry. Its eight freely configurable I/O ports, RS232 and Ethernet interfaces allow the code reader to be configured via a Web browser. Further advantages include diagnostics and status display and standalone operation.
The short exposure time, which can be set as low as 54 μs, allows the 422i to read up to 99 barcodes per image in any format. It captures only one image, allowing quick reading of codes on swiftly moving parts. Adjustable parameters can also optimise performance using pre-filters with code features that can be specified in order to speed up the reading process. The step size of the search for 1D code can also be increased. In addition, the sensor allows the reading of inverted, two-dimensional codes by setting the reading mode to ‘fast’ for good quality codes or ‘robust’ for directly marked codes.
Another feature allows for the determination and evaluation of the code’s quality parameters so that code quality can be checked immediately after printing to ensure readability. The quality criteria can be customised by the end user and the value below which a warning is to be issued can be defined. The reader will produce an error message if the code does not conform to specification.
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