A collector (110) included in a data delivery control apparatus (100) collects data from a PLC (603, 604) and outputs the data to which collection time information indicating collection time is added. A validity determiner (140) determines whether the data is valid based on whether the collection time indicated by the collection time information added to the data is at or later than a starting time indicating a time at which a data sequence as a preset data processing sequence is started. A deliverer (130) delivers the data in accordance with a data sequence setting defining the data sequence in response to validity determination means determining that the data is valid.