NI PXI-2598 PXI轉(zhuǎn)換開關(guān)模塊
品牌：NI
型號：NI PXI-2598
產(chǎn)品說明：PXI轉(zhuǎn)換開關(guān)模塊
NI PXI-2598 PXI轉(zhuǎn)換開關(guān)模塊中文資料：
NI PXI-2598 PXI轉(zhuǎn)換開關(guān)模塊內(nèi)存地址和昵稱的區(qū)別%符號用于區(qū)分內(nèi)存地址和別名。例如，%I17（或%I000017）是內(nèi)存地址。類似的術(shù)語I17（沒有%符號）被PLC視為昵稱，可用于大多數(shù)內(nèi)存地址。例如，如果您的工廠中有一臺名為“17號進(jìn)料”的電機(jī)，工廠中的人通常將其稱為“I17”，您可能希望使用I17作為啟動該電機(jī)的輸出線圈（%Q11）的昵稱。允許您這樣做是因為PLC可以區(qū)分昵稱I17（您對內(nèi)存地址%Q11的昵稱）和內(nèi)存地址%I17。NI PXI-2598 用戶內(nèi)存引用類型下表中提到的用戶引用在Series 90-30 PLC CPU指令集參考手冊GFK-0467.160（安裝16點模塊的最大物理I/O）中進(jìn)行了解釋；最多320個，安裝32點模塊。只能用手持式編程器查看（參見GFK-0402《手持式編程儀用戶手冊》）；可以不在用戶的邏輯程序中引用。NI PXI-2598
英文資料
Difference Between a Memory Address and a Nickname The % symbol is used to distinguish memory addresses from nicknames. For example, %I17 (or %I000017) is a memory address. The similar term, I17 (it has no % sign), is viewed by the PLC as a nickname and could be used with most memory addresses. For example, if you had a motor in your plant called “Infeed No. 17,” and it was commonly referred to as ”I17” by the people in your plant, you might wish to use I17 as the nickname for the output coil (%Q11) that turns on that motor. You are allowed to do so because the PLC can distinguish between the nickname, I17 (your nickname for memory address %Q11), and memory address %I17.User Memory Reference Types The user references referred to in the following tables are explained in the Series 90-30 PLC CPU Instruction Set Reference Manual, GFK-0467.160 physical I/O maximum with 16 point modules installed; 320 maximum with 32 point modules installed. May be viewed only with a Hand-Held Programmer (see the Hand-Held Programmer User’s Manual, GFK-0402) ; may not be referenced in a user’s logic program.NI PXI-2598
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