Conveying apparatus

摘要

A conveying apparatus (1) is composed of several conveying modules (2) each having a controller (40) for control of a motorized roller (6) having a motor (16) incorporated in it. A motor-controlling section (45) installed in the controller (40) operates to sense an article being transported on and along the module (2). An article-state detector (48) included in the motor-controlling section (45) compares the actual number (Pr) of signal pulses indicating the number of rotations of the motor (16) with a standard number (P) of such pulses, when judging whether the article is or is not on the module, without aid of any conventional and discrete prior art sensors.