Patent ID: 7292896
Filing Date: 2007-11-06
Classification: G05B,Y02P

Abstract:
1. A multiplexing control system, comprising: a sensor which detects a state variable in a process; a plurality of microcomputers wherein one of which is a master to which a process signal detected by the sensor is inputted and which outputs a control signal for the process and an other of which is operated in asynchronism as a slave; and a process input/output unit which is provided in common for the plurality of microcomputers that distributes the process signal respectively to the plurality of microcomputers, the process input/output unit comprises: wherein, according to a master/slave relationship which is set in advance in the process input/output unit, the input to the master microcomputer of the process signal is inputted from the input processing unit to the slave microcomputer, the process signal written in the respective memories provided in the interface board and corresponding to the slave microcomputer is inputted.