【正文】 s top plate or base plate, mask painting and weld so that good surface contact can be made between the cabi and plate. (c) To ensure good electrical contact with the control cabi, mask the paint on the installation bolts of the inner plate in the control cabi so that contact between surfaces can be ensured over the widest possible area. (d) Earth the control cabi with a thick wire so that a low impedance connection to ground can be ensured even at high frequencies. (e) Holes made in the control cabi must be 10 cm ( inch) diameter or less. If the holes are 10cm or larger,radio frequency noise may be emitted. In addition, because radio waves leak through a clearance between the control panel door and the main unit,reduce the clearance as much as practicable. The leakage of radio waves can be suppressed by the direct application of an EMI gasket on the paint surface. (2) Connection of power and earth wires Earthing and power supply wires for the PLC system must be connected as described below. (a) Provide an earthing point near the power supply module. Earth the power supply39。s rated voltage and the terminal layout. Connecting a power supply that is different from the rating or incorrectly wiring the product could result in fire or damage. . Tighten the terminal screws with the specified torque. If the terminal screws are loose,it could result in short circuits, fire, or erroneous operation. Tightening the ter minal screws too far may cause damages to the screws and the module, resulting in fallout, short circuits, or module has an ingress prevention label on its top to prevent foreign matter, such as wire offcuts, from entering the module during not peel this label during wiring. Before starting system operation, be sure to peel this label because of heat dissipation. [STARTUP AND MAINTENANCE PRECAUTIONS] ! DANGER . The online operations conducted for the CPU module being operated, connecting the peripheral device (especially, when changing data or operation status), shall be conducted after the manual has been carefully read and a sufficient check of safety has been mistakes could cause damage or problems with of the module. . Correctly connect the battery. Also, do not charge, disassemble, heat, place in fire, short circuit, or solder the of battery can cause overheating or cracks which could result in injury and fires. . Do not disassemble or modify the modules. Doing so could cause trouble, erroneous operation, injury, or fire. . Switch all phases of the external power supply off before mounting or removing the you do not switch off the external power supply, it will cause failure or malfunction of the module. [DISPOSAL PRECAUTIONS] ! CAUTION 西安石油大學(xué)本科畢業(yè)設(shè)計(jì) （論文） . When disposing of this product, treat it as industrial waste. [SWITCH OPERATION AFTER WRITING IN PROGRAM] POINTS (1) Even if the RUN/STOP switch is set to RUN immediately after a program is written when the CPU module is in the stop status, CPU module will not e into RUN the CPU module is reset with the RESET / switch and the RUN/STOP switch is set to RUN after a program has been written, the CPU module can be brought into RUN status. (2) If the CPU module is desired to be brought into RUN status without resetting it, operate the RUN/STOP switch from STOP to RUN, RUN to STOP, and STOP to RUN in that order. After the seconds STOP to RUN switch operation, the CPU module is brought into RUN status. (3) When a program is written while the CPU module is running in boot operation, the program written during the running is written into the program memory. After a program has been written while the CPU module is running, write the program also into the boot original memory. Failure to write a program into the boot original memory will run an old program at the time of the next boot operation. This User39。應(yīng)用程序，其中公眾可能受到影響，如在核電廠和其他電廠各自經(jīng)營的電力公司，并申請(qǐng)?jiān)谝粋€(gè)特殊的質(zhì)量保證系統(tǒng)要求，如鐵路公司或國防目的應(yīng)被排除在可編程邏輯控制器應(yīng)用。 圖 5. 關(guān)于屏蔽層的接地處理 （ c）連接到 10BASE2接口的同軸電纜，必須使用雙重屏蔽同軸電纜。因?yàn)?AUI是屏蔽電纜，如圖 5所示 除去部分外皮，將露出的屏蔽層以盡可能大的面積接地。使用雙重屏蔽同軸電纜可以降低 30MHz以上帶寬的放射噪聲。但是，與夾具相接觸的控制箱的內(nèi)壁部分的油漆要打磨掉。如果不使用屏蔽電纜，或使用屏蔽電纜但沒有進(jìn)行屏蔽層的接地處理，抗干擾性都不能滿足規(guī)格值。 ［電纜］ 西安石油大學(xué)本科畢業(yè)設(shè)計(jì) （論文） 由于從控制箱引 出的電纜含有高頻噪聲成分，在控制箱外以天線的作用發(fā)射噪聲。因?yàn)榻拥鼐€自身攜帶了較大的噪聲，那么接地線較短就可以避免自身成為天線。 （ 2） 電源線接地線的繞線 PLC裝置的接地和電源供給線的排線按以下所示進(jìn)行 ： （ a） 控制箱上的接地點(diǎn)設(shè)計(jì)在電源模塊的近處，使用盡可能粗短（線長(zhǎng)在30cm以下）的接地線（接地用的電 線）將電源模塊的 LG端子（ Line Grind）和FG端子（ Frame Grind）接地。 （ d） 為了保證即使在高頻情況下也具有低阻抗，控制箱要用較粗的接地線接地。這樣不光確保安全性由控制箱屏蔽從 PLC裝置產(chǎn)生的噪聲效果非常良好。 而且，如果交流輸入模塊的交流供電和電源模塊相同那么電源關(guān)閉時(shí)，即使連接在交流輸入模塊上的傳感器處在 ON狀態(tài)也可以防止因?yàn)殡娫辞袛喽斐?OFF狀態(tài)。電流值一旦恢復(fù)正常系統(tǒng)即啟動(dòng)初始化。 1） PLC 或外部設(shè)備 2） I/O 模塊或其他 3） 序列計(jì)劃 在 CPU 模塊返回一個(gè)錯(cuò)誤代碼的一般數(shù)據(jù)處理要求原始地點(diǎn)發(fā)生錯(cuò)誤時(shí)，并有一個(gè)總的數(shù)據(jù)處理請(qǐng)求的形式外圍設(shè)備，智能功能模塊，或網(wǎng)絡(luò)系統(tǒng)。 1） 設(shè)置運(yùn)行 /停止開關(guān)停止。 為了提高系統(tǒng)的可靠性，不僅要有高度可靠的設(shè)備，而且還迅速啟動(dòng)系統(tǒng)發(fā)生后的麻煩成為一個(gè)重要的因素。 !警告 . 當(dāng)線路中的 PLC ，確保它是正確的并檢查該產(chǎn)品的額定電壓和終端布局。 [荷載與安裝 ] 預(yù)防措施的布線 !危險(xiǎn) . 完全關(guān)閉外接電源或安裝時(shí)放置布線。結(jié)合過程控制軟件包（ PX開發(fā)）提供良好的工程環(huán)境。 （ 4） 模塊可以在線改變（在線模塊更改） 當(dāng)一個(gè)模塊出現(xiàn)故障時(shí)，可以通過不停止系統(tǒng)運(yùn)轉(zhuǎn)改變它。 基于高性能模式 QCPU， CPU 的過程有以下額外的操作指示和功能。不寫程序進(jìn)入開機(jī)內(nèi)存時(shí)將運(yùn)行下次啟動(dòng)的舊程序。 （ 2） 如果 CPU 模塊是理想帶進(jìn)運(yùn)行狀況而且沒有重置，操作運(yùn)行 /停止開關(guān)從停止到運(yùn)行，從運(yùn)行到停止，從停止到運(yùn)行遵守該命令。如果不關(guān)掉外接電源，它會(huì)導(dǎo)致故障或失靈的模塊。處理不當(dāng)會(huì)導(dǎo)致電池過熱或裂紋，可能造成傷害和火災(zāi)。 [啟動(dòng)和維護(hù)注意事項(xiàng) ] !危險(xiǎn) . 進(jìn)行網(wǎng)上業(yè)務(wù)的 CPU 模塊操作，連接周邊設(shè)備（尤其是，當(dāng)發(fā)生變化的數(shù)據(jù)或 操作狀態(tài)） ，應(yīng)在手冊(cè)中仔細(xì)閱讀并有足夠的安全檢查下進(jìn)行。緊固螺絲終端太遠(yuǎn)可能造成螺絲釘和模塊的損害，造成的后果是短路或故障。 !警告 . 當(dāng)線路中的 PLC ，確保 它是正確的，檢查產(chǎn)品的額定電壓和終端布局。 [接線注意事項(xiàng) ] !危險(xiǎn) . 完全關(guān)閉外部電源時(shí)，安裝或放置布線。請(qǐng)注意，有限制的模塊，可以改變?cè)诰€和每個(gè)模塊已預(yù)定的變化過程。取消可能會(huì)由于接觸故障而導(dǎo)致故障。安裝完畢后，檢查他們的松動(dòng)。 [安裝注意事項(xiàng) ] ！警告 . 不要把一大堆的控制線路或通信電纜與主回路或電源線捆在一起或把它們安西安石油大學(xué)本科畢業(yè)設(shè)計(jì) （論文） 裝的彼此很接近。 特別是對(duì)上述控制 PLC的遙控器上的一個(gè)外部設(shè)備， PLC的故障原因是數(shù)據(jù)通信故障，所以立即行動(dòng)可能不會(huì)被采取的。 . 建立一個(gè)電路，打開外部電源時(shí)， PLC 的主要模塊電源是打開的。 （ 2） 輸出可留待或關(guān)閉時(shí)，有麻煩的產(chǎn)出模塊繼電器或晶體管。 ！警告 表明，不正確的處理可能會(huì)導(dǎo)致在危險(xiǎn)的條件下，造成中度或輕微人身傷害或人身損害。西安石油大學(xué)本科畢業(yè)設(shè)計(jì) （論文） 本科畢業(yè)設(shè)計(jì)（論文）外文翻譯譯文 學(xué)生姓名 ：