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NI PCI-7811支持惡劣工作環(huán)境的寬溫度
確定以太網(wǎng)接口是否正常上電
配置完接口以后，按以下步驟操作以確定以太網(wǎng)接口運(yùn)行正常
1.關(guān)掉電源，3~5秒后重新上電。這將初始化一-系列的自診斷測(cè)試。EOK指示燈將會(huì)閃爍以表明上電進(jìn)程。
2.正常上電時(shí)，以太網(wǎng)指示燈將會(huì)如下顯示。(關(guān)于指示燈的細(xì)節(jié)，參考第2章"CPU和以太網(wǎng)指示燈")這時(shí)以太網(wǎng)接口在線并且運(yùn)行正常
如果再上電過(guò)程中檢測(cè)到問(wèn)題，以太網(wǎng)接口不會(huì)直接轉(zhuǎn)到操作狀態(tài)。關(guān)于自診斷，參考PAC系統(tǒng)TCP/IP以太網(wǎng)通訊, GFK-2224
在網(wǎng)絡(luò)上PING TCP/IP以太網(wǎng)接口
PING是一個(gè)測(cè)試網(wǎng)絡(luò)目標(biāo)是否可訪問(wèn)的程序。PING程序向這個(gè)目標(biāo)發(fā)送一一個(gè)ICMP請(qǐng)求信息并且等待回復(fù)。包括PAC系統(tǒng)以太網(wǎng)接口的大部分TCP/IP節(jié)點(diǎn)支持PING命令。你應(yīng)該P(yáng)ING每-一個(gè)已安裝的以太網(wǎng)接口。以太網(wǎng)接口響應(yīng)PING命令不僅表明接口運(yùn)行并且配置正常，而且表明已經(jīng)有合適的TCP/IP以太網(wǎng)配置信息存儲(chǔ)到端口內(nèi)。
從U IX 主機(jī)或PC.上運(yùn)行的TCP/IP 軟件Pi接口可從UNIX主機(jī)或PC.上運(yùn)行的TCP/IP軟件都支持PING命令(因?yàn)榇蠖鄶?shù)TCP/IP通訊軟件提供PING命令)，也可以從其他的以太網(wǎng)接口運(yùn)行PING命令。使用PC或者UNIX主機(jī)時(shí)，可以參考PING命令，但是一般來(lái)講，需要遠(yuǎn)端主機(jī)的IP 地址作為PING命令的參數(shù)。
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