The present invention relates to a data acquisition system in a logic controller for a programmer that is installed in a production facility in a manufacturing plant and can check the progress of a production process. It relates to a data acquisition system in a programmable logic controller that can be applied in real time to (PC) to check the data flow of a continuous manufacturing process on the screen using the function of a PC, and to store past data in case of a failure. The configuration may include a programmable logic controller having a function of extracting a progress state of a production process as a data signal, an insulating card having a function of impedance matching an output of the programmable logic controller with an external device, and data received from the insulating card in real time. Function of processing with A data acquisition unit and a computer having a function of analyzing and processing data applied from the data acquisition unit.;The data acquisition system in the programmable logic controller according to the present invention configured and operated as described above processes real time data at the same speed as acquiring data from the PLC because the PC processes the address and data signals converted into digital signals from the PLC. Provides the effect of obtaining.
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