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PROGRAMMABLE CONTROLLER USING SEQUENCE INTERPRETER APPROACH AND CONTROL METHOD OF PROCESS USING PROGRAMMABLE CONTROLLER
PROGRAMMABLE CONTROLLER USING SEQUENCE INTERPRETER APPROACH AND CONTROL METHOD OF PROCESS USING PROGRAMMABLE CONTROLLER
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机译:序列解释器方法的可编程控制器及使用可编程控制器的过程控制方法
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摘要
PROBLEM TO BE SOLVED: To provide a PLC using an external control data technique.;SOLUTION: The work memory 24 of the programmable logic controller (PLC) is loaded with only one instruction at a time from the PLC's load memory 22 of the PLC which contains the entire instruction set to control a process. Each instruction has a format which contains at least one option code which must be evaluated to be true by a PLC interpreter before the corresponding instruction is executed. If the interpreter evaluates at least the one option code to be false, the instruction is not executed and a succeeding instruction is transferred from the load memory 22 to the work memory 24 and then its corresponding option codes are evaluated.;COPYRIGHT: (C)2006,JPO&NCIPI
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