供應(yīng)Allen-Bradley（羅克韋爾） 1794-IM8 伺服驅(qū)動(dòng)
一）分析被控對(duì)象并提出控制要求
詳細(xì)分析被控對(duì)象的工藝過(guò)程及工作特點(diǎn)，了解被控對(duì)象機(jī)、電、液之間的配合，提出被控對(duì)象對(duì)PLC控制系統(tǒng)的控制要求，確定控制方案，擬定設(shè)計(jì)任務(wù)書(shū)。
（二）確定輸入／輸出設(shè)備
根據(jù)系統(tǒng)的控制要求，確定系統(tǒng)所需的全部輸入設(shè)備（如：按紐、位置開(kāi)關(guān)、轉(zhuǎn)換開(kāi)關(guān)及各種傳感器等）和輸出設(shè)備（如：接觸器、電磁閥、信號(hào)指示燈及其它執(zhí)行器等），從而確定與PLC有關(guān)的輸入/輸出設(shè)備，以確定PLC的I/O點(diǎn)數(shù)。
（三）選擇PLC
PLC選擇包括對(duì)PLC的機(jī)型、容量、I/O模塊、電源等的選擇，詳見(jiàn)本章第二節(jié)。
（四）分配I/O點(diǎn)并設(shè)計(jì)PLC外圍硬件線(xiàn)路
1.分配I/O點(diǎn)
畫(huà)出PLC的I/O點(diǎn)與輸入／輸出設(shè)備的連接圖或?qū)?yīng)關(guān)系表，該部分也可在第２步中進(jìn)行。
2.設(shè)計(jì)PLC外圍硬件線(xiàn)路
畫(huà)出系統(tǒng)其它部分的電氣線(xiàn)路圖，包括主電路和未進(jìn)入可編程控制器的控制電路等。
由PLC的I/O連接圖和PLC外圍電氣線(xiàn)路圖組成系統(tǒng)的電氣原理圖。到此為止系統(tǒng)的硬件電氣線(xiàn)路已經(jīng)確定。
供應(yīng)Allen-Bradley（羅克韋爾） 1794-IM8 伺服驅(qū)動(dòng)
| 1768-CNB | 1794-ACN15 |
| 1768-CNBR | 1794-ACNR15 |
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| 1756-TBCH | |
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| 1756-TBS6H | |
| 1756-TBSH | |
| 1757-SRM |
供應(yīng)Allen-Bradley（羅克韋爾） 1794-IM8 伺服驅(qū)動(dòng)
| 140CPU11302 |
| 140CPU11303 |
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供應(yīng)Allen-Bradley（羅克韋爾） 1794-IM8 伺服驅(qū)動(dòng)
通信協(xié)議和云平臺(tái)持續(xù)演進(jìn)，軟件和固件不斷更新，導(dǎo)致電子產(chǎn)品交互變得日益復(fù)雜，給開(kāi)發(fā)人員構(gòu)成現(xiàn)實(shí)挑戰(zhàn)，因?yàn)槊恳淮窝葸M(jìn)、每一次更新都會(huì)帶來(lái)一系列新變化，需要接受?chē)?yán)格測(cè)試。通過(guò)盡量使用測(cè)試自動(dòng)化和不斷更新的數(shù)字孿生，開(kāi)發(fā)團(tuán)隊(duì)能夠測(cè)試更多的變化并降低具體設(shè)計(jì)出現(xiàn)問(wèn)題的風(fēng)險(xiǎn)。
