| 摘要 |
An apparatus such as a large scale sorter with peripheral devices associated therewith and including a transport path has sensors arranged along portions of the path and software objects respectively associated with each sensor and with each other in a tracking chain. Length measurement of articles is provided to confirm article identification and each software object, referred to as a softcell, is of a selectable type in accordance with the type of sensor event it can report and a mode controlling conditions under which selected types of events will be reported. Providing software objects for tracking allows hardware independence and ease of design and modification, particularly in the field by creation of softcells from a generalized architecture through a graphical user interface.
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