詳情：
※產(chǎn)品參數(shù)：ABB DSPC174 處理器板 工控備件PLC系統(tǒng)模塊
產(chǎn)品lD:ESE05461R1AB型號(hào)名稱DSPC174日錄描述DSPC174處理睦板附加信息ABE型號(hào)名稱DSPC 174核心信用0.00原產(chǎn)國(guó)瑞典(SE)海關(guān)關(guān)稅編號(hào)85389091框架尺寸備件重0.95kq發(fā)票描述:DSPC 174處理器板定制:無(wú)介質(zhì)描述:處理器板低訂購(gòu)數(shù)量:1件訂購(gòu)數(shù)量:1件包裝級(jí)別1毛重:0.95 kg包裝級(jí)別1
程序設(shè)計(jì)
1.程序設(shè)計(jì)
根據(jù)系統(tǒng)的控制要求，采用合適的設(shè)計(jì)方法來設(shè)計(jì)PLC程序。程序要以滿足系統(tǒng)控制要求為主線，逐一編寫實(shí)現(xiàn)各控制功能或各子任務(wù)的程序，逐步完善系統(tǒng)指定的功能。除此之外，程序通常還應(yīng)包括以下內(nèi)容：
1）初始化程序。在PLC上電后，一般都要做一些初始化的操作，為啟動(dòng)作必要的準(zhǔn)備，避免系統(tǒng)發(fā)生誤動(dòng)作。初始化程序的主要內(nèi)容有：對(duì)某些數(shù)據(jù)區(qū)、計(jì)數(shù)器等進(jìn)行清零，對(duì)某些數(shù)據(jù)區(qū)所需數(shù)據(jù)進(jìn)行恢復(fù)，對(duì)某些繼電器進(jìn)行置位或復(fù)位，對(duì)某些初始狀態(tài)進(jìn)行顯示等等。
2）檢測(cè)、故障診斷和顯示等程序。這些程序相對(duì)獨(dú)立，一般在程序設(shè)計(jì)基本完成時(shí)再添加。
3）保護(hù)和連鎖程序。保護(hù)和連鎖是程序中不可缺少的部分，必須認(rèn)真加以考慮。它可以避免由于非法操作而引起的控制邏輯混亂。
2.程序模擬調(diào)試
程序模擬調(diào)試的基本思想是，以方便的形式模擬產(chǎn)生現(xiàn)場(chǎng)實(shí)際狀態(tài)，為程序的運(yùn)行創(chuàng)造必要的環(huán)境條件。根據(jù)產(chǎn)生現(xiàn)場(chǎng)信號(hào)的方式不同，模擬調(diào)試有硬件模擬法和軟件模擬法兩種形式。
1）硬件模擬法是使用一些硬件設(shè)備（如用另一臺(tái)PLC或一些輸入器件等）模擬產(chǎn)生現(xiàn)場(chǎng)的信號(hào)，并將這些信號(hào)以硬接線的方式連到PLC系統(tǒng)的輸入端，其時(shí)效性較強(qiáng)。
2）軟件模擬法是在PLC中另外編寫一套模擬程序，模擬提供現(xiàn)場(chǎng)信號(hào)，其簡(jiǎn)單易行，但時(shí)效性不易保證。模擬調(diào)試過程中，可采用分段調(diào)試的方法，并利用編程器的監(jiān)控功能。
（六）硬件實(shí)施
硬件實(shí)施方面主要是進(jìn)行控制柜（臺(tái)）等硬件的設(shè)計(jì)及現(xiàn)場(chǎng)施工。主要內(nèi)容有：
1)設(shè)計(jì)控制柜和操作臺(tái)等部分的電器布置圖及安裝接線圖。
2)設(shè)計(jì)系統(tǒng)各部分之間的電氣互連圖。
3)根據(jù)施工圖紙進(jìn)行現(xiàn)場(chǎng)接線，并進(jìn)行詳細(xì)檢查。
由于程序設(shè)計(jì)與硬件實(shí)施可同時(shí)進(jìn)行，因此PLC控制系統(tǒng)的設(shè)計(jì)周期可大大縮短。
（七）聯(lián)機(jī)調(diào)試
聯(lián)機(jī)調(diào)試是將通過模擬調(diào)試的程序進(jìn)一步進(jìn)行在線統(tǒng)調(diào)。聯(lián)機(jī)調(diào)試過程應(yīng)循序漸進(jìn)，從PLC只連接輸入設(shè)備、再連接輸出設(shè)備、再接上實(shí)際負(fù)載等逐步進(jìn)行調(diào)試。如不符合要求，則對(duì)硬件和程序作調(diào)整。通常只需修改部份程序即可。
全部調(diào)試完畢后，交付試運(yùn)行。經(jīng)過一段時(shí)間運(yùn)行，如果工作正常、程序不需要修改，應(yīng)將程序固化到EPROM中，以防程序丟失。
※ Product parameters: ABB DSPC174 processor board industrial control spare parts PLC system module
Product lD:ESE05461R1AB Model Name DSPC174 Day Record Description DSPC174 Processing Board Additional information ABE Model Name DSPC174 Core Credit 0.00 Country of Origin Sweden (SE) Customs Duty No. 85389091 Frame Dimension Spare part Weight 0.95kq Invoice Description :DSPC 174 Processor board Customization: None Media Description: Processor board Low order quantity :1 piece Order quantity :1 piece packaging level 1 Gross weight: 0.95kg Packaging level 1
programming
1. Programming
According to the control requirements of the system, the PLC program is designed with appropriate design methods. The program should meet the system control requirements as the main line, write the program to achieve each control function or each subtask one by one, and gradually improve the function specified by the system. In addition, the program should generally include the following:
1) Initialize the program. After the PLC is powered on, it is generally necessary to do some initialization operations to make necessary preparations for startup to avoid misoperation of the system. The main contents of the initialization program are: clear some data areas, counters, etc., restore the required data in some data areas, set or reset some relays, display some initial states, and so on.
2) Detection, fault diagnosis and display procedures. These programs are relatively independent and are usually added when the program design is mostly complete.
3) Protection and interlocking procedures. Protection and interlocking are an indispensable part of the procedure and must be carefully considered. It can avoid the control logic confusion caused by illegal operation.
2. Program simulation debugging
The basic idea of program simulation debugging is to simulate the actual state of the field in a convenient form and create the necessary environmental conditions for the operation of the program. According to the different ways of generating the field signal, there are two forms of simulation debugging: hardware simulation and software simulation.
1) The hardware simulation method is to use some hardware equipment (such as another PLC or some input devices, etc.) to simulate the field signal, and these signals are hardwired to the input end of the PLC system, which is time-efficient.
2) The software simulation method is to write another set of simulation programs in PLC to simulate the field signal, which is simple and easy, but the timeliness is not easy to guarantee. In the process of simulation debugging, the method of segmental debugging can be adopted, and the monitoring function of the programmer can be used.
(6) Hardware implementation
Hardware implementation is mainly for the control cabinet (table) and other hardware design and site construction. The main contents are:
1) Design the electrical layout and installation wiring diagram of the control cabinet and operation table.
2) Design the electrical interconnection diagram between all parts of the system.
3) Conduct on-site wiring according to the construction drawings and carry out detailed inspection.
Because program design and hardware implementation can be carried out at the same time, the design cycle of PLC control system can be greatly shortened.
(7) On-line debugging
On-line debugging is to further conduct on-line debugging through the simulated debugging program. The online debugging process should be gradual, from the PLC only connected to the input device, then connected to the output device, and then connected to the actual load gradually debugging. If the requirements are not met, the hardware and program are adjusted. It is usually only necessary to modify some programs.
After all debugging is completed, it is delivered for trial operation. After a period of operation, if the work is normal and the program does not need to be modified, the program should be solidified into the EPROM to prevent the program from being lost.
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