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1746-NI16I 輸入信號(hào)類(lèi)型、數(shù)據(jù)格式、濾波頻率等參數(shù)
81746-NI16I是美國(guó)Allen-Bradley公司出品的基于SLC500系列PLC的模擬量輸入模塊，設(shè)計(jì)時(shí)可以通過(guò)編程靈活設(shè)定該模塊的工作方式、輸入信號(hào)類(lèi)型、數(shù)據(jù)格式、濾波頻率等參數(shù)，從而方便地應(yīng)用于各種場(chǎng)合。采用1746-NI16I作為采集模塊組態(tài)的SCADA系統(tǒng)具有擴(kuò)展方便、組態(tài)靈活、穩(wěn)定可靠、便于維護(hù)等特點(diǎn)。
1746-NI16I有兩種工作方式：CLASSl和CLASS3。其中的CLASSl方式是經(jīng)典的使用方式，該方式占用系統(tǒng)資源較少，但使用起來(lái)需要較為復(fù)雜的編程；而CLASS3方式則使用方便，編程簡(jiǎn)單，但占用系統(tǒng)資源較多。
在使用1746-NI16I之前必須先了解1746-NI16I的軟件資源，只有在對(duì)模塊的每個(gè)通道正確配置后，才能使模塊正常工作。
對(duì)1746-NI16I編程首先要了解SLC500系列PLC對(duì)內(nèi)存變量的管理方式。SLC500系列PLC以文件的方式組織內(nèi)存，即把內(nèi)存劃分為若干個(gè)區(qū)域–文件，每個(gè)文件分管不同類(lèi)型的變量，如B文件、N文件、I文件、0文件分別用于管理開(kāi)關(guān)量數(shù)據(jù)、模擬量數(shù)據(jù)、輸人數(shù)據(jù)、輸出數(shù)據(jù)等等。
1746-NI16I 輸入信號(hào)類(lèi)型、數(shù)據(jù)格式、濾波頻率等參數(shù)
81746-NI16I is an analog input module based on SLC500 series PLC produced by Allen-Bradley Company in the United States. The working mode, input signal type, data format, filtering frequency and other parameters of the module can be flexibly set by programming during design, so as to be easily used in various occasions. The SCADA system using 1746-NI16I as the acquisition module configuration has the characteristics of easy expansion, flexible configuration, stability and reliability, and easy maintenance.
1746-NI16I works in two ways: CLASSl and CLASS3. The CLASSl mode is the classic mode of use, which occupies less system resources, but needs more complex programming to use. The CLASS3 mode is easy to use, easy to program, but occupies more system resources.
The software resources of 1746-NI16I must be understood before using 1746-NI16I, and the module can work properly only after each channel of the module is correctly configured.
The 1746-NI16I programming must first understand the SLC500 series PLC’s management of memory variables. SLC500 series PLC organizes memory in the way of files, that is, the memory is divided into several areas – files, each file is in charge of different types of variables, such as B files, N files, I files, 0 files are used to manage switch data, analog data, input data, output data and so on.
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