High speed ladder instruction process system for a programmable

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395595, 3642328, 3642624, 364DIG1, G06F 900

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active

058093192

ABSTRACT:
A high speed instruction process system for a programmable logic controller having a first memory for storing one or more user instructions, which each instruction corresponds to a different process cycle, circuitry for processing the user instruction, a second memory for storing one or more user data, which each data corresponds to a different process cycle, circuitry for accessing a stored user data, and circuitry for processing an accessed user data in accordance with a processed user instruction, wherein the user data corresponding to a process cycle is accessed at the substantially same time as the user instruction corresponding to a different process cycle is processed.

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