32位MCU實(shí)現(xiàn)工業(yè)以太網(wǎng)

　　以太網(wǎng)在企業(yè)網(wǎng)絡(luò)中的優(yōu)勢(shì)使它在工業(yè)網(wǎng)絡(luò)空間中具有明顯的優(yōu)勢(shì)。使用一個(gè)單一的核心協(xié)議在整個(gè)企業(yè)允許數(shù)據(jù)無(wú)縫地從工廠的地板業(yè)務(wù)單位，使人們有可能更有效地管理生產(chǎn)計(jì)劃，最大限度地減少庫(kù)存成本，并優(yōu)化維護(hù)操作。

　　以太網(wǎng)不是為工廠設(shè)計(jì)的，但標(biāo)準(zhǔn)以太網(wǎng)的主要缺點(diǎn)是它不能提供實(shí)時(shí)響應(yīng)所需的許多工業(yè)應(yīng)用，如過(guò)程和電機(jī)控制。幾十年來(lái)，確定性的協(xié)議，如CAN（控制器局域網(wǎng)）和PROFIBUS（過(guò)程現(xiàn)場(chǎng)總線）主導(dǎo)工業(yè)網(wǎng)絡(luò)。雖然這些協(xié)議仍然保持相當(dāng)大的市場(chǎng)份額，幾年前以太網(wǎng)變種開(kāi)始出現(xiàn)，提供實(shí)時(shí)性能，標(biāo)準(zhǔn)以太網(wǎng)缺乏。

　　In order to rationalize the unproductive diversity that developed in industrial networking， in 2001 the Open Device Vendor Association （OVDA） was formed to create and maintain the Common Industrial Protocol （CIP） to ensure some level of compatibility. Since then， several protocols， including EtherNet/IP， DeviceNet， ControlNet， and CompoNet have implemented CIP in the upper levels of their protocol stacks. Hundreds of vendors now support CIP.

　　EtherNet/IP is the name given to CIP when it is implemented over standard Ethernet as defined by IEEE 802.3. The “IP” in EtherNet/IP stands for Industrial Protocol.