作者: Fredrick R. Immormino , Charles M. Rischar , Daniel L. Galdun , Daniel L. Stewart
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摘要: A programmable controller suitable for operating a machine to carry out programmed functions includes plurality of program processors. Each the processors being operable execute simultaneously different user control that directs operation perform specific functions. processor means is contained within separate module which also memory storing programs are be executed by means. mechanism provided sequence in and executes given program. At least one input/output interface circuit controls gathering data from various external sensors response output received means, actuator devices on machine. The regarding state stored circuit. system supervises interaction intercommunication circuits.