咨詢熱線--17750626260
當前,在所有過程控制領域,大的發(fā)展趨勢之一就是Ethernet技術的擴展。PLC也例外,現(xiàn)在,越來越多的PLC供應商開始提供Ethernet接口部件。在近的幾年間,我們已經看到,發(fā)展比現(xiàn)有普通小快靈PLC更加強大的PLC是種趨勢。Ethernet將會成為PLC的通信標準嗎?也許終結果是這樣的,但現(xiàn)在還為時尚早。對于在PLC上提供Ethernet接口將能夠解決所有通信問題,人們普遍存在著誤解。Ethernet僅僅定義了OSI參考模型底部的幾層協(xié)議標準,如果上層協(xié)議相互之間不能兼容,那么仍然不可能進行相互之間的通信處理。打個比方,這如同一個不懂英語的中國人與一個不懂漢語的美國人之間是不能夠通過電話進行對話一樣。因此,協(xié)議就是設備之間相互通信的語言。
另一方面,前進的步伐已經邁出,我們只有迎著困難而上,為了將Ethernet技術應用到工廠底層的現(xiàn)場過程控制設備中去,ODVA協(xié)會為此建立了一套性標準技術規(guī)范,即Ethernet/IP標準,以便能夠解決在實際工作中所遇到的困難。
【誠信經營】【質量可靠】【進口原裝】【拆包防偽】
【超大庫存】【當天付款】【順豐速運】【歡迎搶購】
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廈門莫格電氣自動化有限公司
張芳(銷售工程師)
電 話:0592-6514182/17750626260
Q Q:177763184
郵 箱:177763184@qq.cm
傳 真:0592-6514751
網址:http://www.mogget.cn
誠信經營,質量為首,誠信至上,莫格電氣竭誠為您服務!
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B-LINE JOINER B787-22
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LEVITON 125/250V 20A GROUNDING LOCKING PLUG, 2411 NIB
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HUBBELL HBL23200 REPLACES 2320A HBL TWIST LOCK RECEPTACLE NIB
B-LINE SPLICE PLATE 9A-1006 LOT OF 35
BRAD HARRISON MPIS 410P401 MULTI-PORT INTERCONNECT SYSTEM, NIB
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FESTO CYLINDER ADVU-63-25-P-A
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MAHLE 220V 2.5A MAINTENANCE INDICATOR, PIS 3003
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