GE 10BASE-T
冗余CPU和其它PC系統(tǒng)CPU的比較
下面的特性是不同的:
■I/0和模塊中斷:包括從離散型輸入模塊發(fā)出的單脈沖觸發(fā)的中斷,各種從模擬量輸入
模塊發(fā)出的報(bào)警中斷,和VME總線模塊發(fā)出的中斷。聲明I/0中斷的觸發(fā)不能存儲(chǔ)在冗余CPU內(nèi)。
■不支持14點(diǎn)中斷的模塊(IC697MDL671)
■中斷功能塊(I/O, 時(shí)間,模塊) :包括中斷的邏輯不能存儲(chǔ)在CPU里。不支持VME綜合機(jī)架。
■停止I/O掃描模式:如果試圖將PLC設(shè)置于停止模式,PLC 會(huì)拒絕執(zhí)行并返回一個(gè)錯(cuò)誤。
■不能使用#OVR_ PRE %S參考值,冗余CPU不支持此功能。
使用CRE020的CPU操作和其它PAC系統(tǒng)的CPU的不同: 使能錯(cuò)誤檢測(cè)和糾正功能(ECC)。
■運(yùn)行/鎖使能模式:詳細(xì)的見(jiàn)第四章,操作。
CPU在同步時(shí)不能使用用戶自定義的錯(cuò)誤方式。
■停止到運(yùn)行模式的轉(zhuǎn)換。細(xì)節(jié)參見(jiàn)第四章冗余CPU的同步。
支持以下的以太網(wǎng)界面特性:
■冗余的IP地址
■網(wǎng)上監(jiān)視PLC的數(shù)據(jù)。支持最多總共16個(gè)Web服務(wù)器和FTP連接。
■支持最多255個(gè)以太網(wǎng)全局?jǐn)?shù)據(jù)(EGD)交換組,每個(gè)交換組可包含100個(gè)變量。
■EGDEGD上傳和可選擇的EGDEGD交換數(shù)據(jù)
■上傳和下載用戶配置參數(shù)文件(AUP) ,包括用戶定義的內(nèi)部以太網(wǎng)操作參數(shù)。
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