工業網路介面之系統設計與研究

On Research and Implement of Industrial Network Interfaces

謝雨哲(YU-JHE SIE)

指導教授 ： 張鴻義

國立虎尾科技大學/工程學院/航空與電子科技研究所/碩士(2013年)

https://doi.org/10.6827/NFU.2013.00141

摘要

工業自動化生產系統通常包含一個或數個可程式控制器(PLC)與許多的週邊裝置(Devices)，如何正確且快速地在PLC與Devices之間交換訊息攸關系統建置的成本與系統運作的穩定性。
早期PLC與Devices之間的連接方式大都採用ON/OFF接點、電壓位準與電流迴路等方法，這些方法由於不具有資訊通信的功能，在大型的工業自動化生產系統中已不敷使用，因此越來越多的工業自動化生產系統採用工業網路連線的方式進行PLC與Devices之間的通信。
目前常用的工業網路介面包含有ProfiNet、EtherCAT、Profibus及Modbus等，其中又以Profibus與Modbus最為廣泛使用，因此本論文分別探討此兩種通信協定的內容並以實際電路加以實現，本論文所完成的Modbus 及Profibus介面可直接與PLC連線並交換資料，本論文並且以工業自動化生產系統中常見的負載電流偵測作為範例，架設一個實際的網路系統來驗證上述通訊界面的實用性，實驗結果顯示本論文製作之工業網路介面系統與市售的PLC擁有良好的相容性且具有高度的可靠性。

關鍵字

可程式控制器 ； 工業網路 ； Profibus ； Modbus

並列摘要

An automatic manufacturing system contains one or several programmable logic controllers (PLC) and plenty of peripheral devices. A proper and prompt exchange of messages between the PLC and those devices is essential for the system’s reliability, and is also relevant to its costs in constructing.
Traditionally, ON/OFF switch, voltage level or current loop are used to connect the PLC and its peripheral devices. Those methods do not provide information communicating functions, which is now insufficient in larger automatic manufacturing systems. Therefore, more and more automatic manufacturing systems rely on industry network for communication between PLC and its devices. The most commonly used industry network interfaces are ProfiNet, EtherCAT, Profibus, and Modbus. Profibus and Modbus are the most popular among those, so we choose to discuss the details about these two communication protocols, design and implement the network interfaces. For instance we setup a system which can monitor loading current to verify the network interfaces we construct. The results show the network interfaces we implemented have good compatibility and stability with the PLC at market.

並列關鍵字

PLC ； Industry Network ； PROFIBUS ； Modbus

參考文獻

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