PLC를 이용한 실시간 설비 거동 정보 수집 방안

Many studies are performed regarding the method of collecting field data in real time. The importance of real-time data in the production site is highlighted because of IT application to the production and manufacturing industry. Equipment operation information can be an important basis to improve enterprises’ competitiveness when the production site is monitored in real time and the production power is analyzed and provided by upper-level systems, such as the manufacturing execution system and ERP. This study introduces a method of collecting the equipment operation information in real time using a PLC. If the information cannot be extracted as digital data, analog information can be collected instead using temperature or current sensors. As a result, scalability and real time can be applied when collecting equipment operation information. The operation information collected in real time can be effectively utilized as the basic data for production statistics, equipment control, and malfunction diagnosis of equipment through the interface with the manufacturing execution system.