The invention aims to provide a zone controller enabling flexible conveyance according to the use by simple change of setting. An aspect of the invention is a zone controller 10 for a particular zone picked from a plurality of zones for control into which a roller conveyor line 1 is divided and which are arrangeable in a row in the direction of conveyance, being capable of controlling operation of a driving roller 4a for conveyance provided in the particular zone, having a mode-setting means 14 capable of switching between a slug mode and a singulation mode. In the slug mode, operation of the driving roller is controlled so that articles in the zones are conveyed uniformly to downstream, maintaining the order of the articles in the conveying line. In the singulation mode, operation of the driving roller is controlled so that the articles are conveyed separately to downstream with a predetermined number of zones in which no article exists preserved between the zones in which the articles exist. IMAGE
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