Distributed control system (DCS) IO measuring point distribution method

The invention discloses a DCS (Distributed Control System) IO (Input/Output) measuring point distribution method, which comprises the following steps of: acquiring IO measuring point information, calculating the type and the number of required cards and generating an IO distribution table which at least comprises bit number information of each measuring point; cable information is obtained, the cable information is synchronized to the IO distribution table based on a preset rule, and the cable information at least comprises a cable box number, a cable number and a cable model; a trigger command of a first preset control is received, cables with the same cable box number are divided into the same cabinet, IO measuring point information is updated based on the cable box number, the updated IO measuring point information at least comprises IO bit number information, and IO measuring point distribution is achieved; wherein the IO bit number information and the cable box number have a corresponding preset relation