| 4. Network |
0) interface가 왜 필요한가?(Reason why you know about the interface)
1) 산업통신프로토콜(Industrial protocol)
2) Field bus
3) Industrial Ethernet
4) OPC통신
5) 왜 Kepware를 사용하나?(Why you have to use the kepware)
6) Ethernet 기술▲, Fieldbus 기술▼
7) RJ-45 Lan cable, Cross cable & Direct Cable
8) Serial Commnuication Protocol - RS485
9) RS-485 2선식 연결과 4선식 연결 방식 (RS485 4w to 2w)
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