Process control computer

Details Process control computer Process control computer

G - Physics

06

F

354/230.3

G06F 9/32 (2006.01) G05B 19/05 (2006.01)

Patent

CA 1159572

ABSTRACT A main memory of a process control computer especially for controlling industrial machinery and plants is directly connected to a data input/output unit and via a separate address processor to an address memory. A clock generator is connected to a program memory and the address memory and supplies sequential clock pulses for the execution of the program and for the simul- taneous delivery of addresses in each program step. The main memory which stores the data from the data input/output unit after the feeding of the addresses from the address processor, supplies the data for the program step to an arithmetic logic unit, which simultaneously receives pulse-frequency driven operation commands from the program memory and feeds the operation results to the data input/output unit and/or to the main memory for storing. A program step counter connected to the program memory continues switching the program steps and controls the output of the operation commands from the program memory. The data bus of the computer is separated from the address bus thereof.

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