電氣工程及其自動化外文資料翻譯

1、<p>　　畢業(yè)設(shè)計(jì)(論文)外文資料翻譯</p><p>　　學(xué)院 (系)： 電子電氣工程學(xué)院 </p><p>　　專 業(yè)： 電氣工程及其自動化 </p><p>　　姓 名： </p><p>　　學(xué) 號

2、： 0702050106 </p><p>　　外文出處： SIMATIC S7-200 </p><p>　　附 件： 1.外文資料翻譯譯文；2.外文原文。 </p><p>　　注：請將該封面與附件裝訂成冊。</p><p>　　附件1：外文資料翻譯譯文&l

3、t;/p><p>　　進(jìn)入程序段3 ： 復(fù)位定時(shí)器 </p><p>　　當(dāng)計(jì)時(shí)值到達(dá)設(shè)定值(100)，定時(shí)器觸點(diǎn)會閉合， T33閉合會使M0.0置位。由于定時(shí)器是靠M0.0的常閉的觸點(diǎn)啟動的， M0.0的狀態(tài)從(0)到 (1)會使定時(shí)器復(fù)位。</p><p>　　輸入觸點(diǎn)T33的步驟如下 ：</p><p>　　1. 從位邏輯指示中選擇常

4、開觸點(diǎn)。</p><p>　　2. 按住鼠標(biāo)左鍵并且把觸點(diǎn)拖到第三個(gè)程序段上。</p><p>　　3. 點(diǎn)擊在觸點(diǎn)之上的“ ？ ？ ？”并輸入定時(shí)器的位地址： T33</p><p>　　4. 按回車鍵進(jìn)入觸點(diǎn)的地址。</p><p><b>　　圖2-9 網(wǎng)絡(luò)3</b></p><p>　　

5、輸入線圈M0.0的步驟如下：</p><p>　　1. 在位邏輯指令中選擇輸出線圈。</p><p>　　2. 按住鼠標(biāo)左鍵并且把輸入線圈拖到在第三個(gè)程序段上。</p><p>　　3. 雙擊在線圈之上的“ ？ ？ ？”然后輸入下列地址： M0.0</p><p>　　4. 按回車鍵確認(rèn)。</p><p><b&

6、gt;　　存儲例子程序</b></p><p>　　在輸入完以上三個(gè)程序段后，您就已完成整個(gè)例子程序。 當(dāng)您保存程序時(shí)，您創(chuàng)建了包括S7-200 CPU類型及其他參數(shù)在內(nèi)的一個(gè)項(xiàng)目。 保存項(xiàng)目：</p><p>　　1. 從菜單欄中選擇菜單命令文件->另存為。</p><p>　　圖 2-10 保存程序</p><p>　

7、　2. 在“另存為”對話框中輸入一個(gè)項(xiàng)目名。</p><p>　　3. 點(diǎn)擊“保存”以存儲項(xiàng)目。</p><p>　　保存項(xiàng)目后，您可下載程序到S7-200。</p><p><b>　　下載例子程序</b></p><p><b>　　提示：</b></p><p>　　每

8、一個(gè)STEP7-- Micro/WIN項(xiàng)目都會有一個(gè)CPU類型(CPU 221， CPU 222， CPU 224， CPU 224XP或者CPU 226)。 如果您在項(xiàng)目中選擇的CPU類型，與您實(shí)際連接的CPU類型不匹配，STEP7-- Micro/WIN會提示您并要您作出選擇。 如果您在本例中遇到這種情況，可以選擇“繼續(xù)下載”。</p><p>　　1. 您可以點(diǎn)擊在工具欄上的下載圖標(biāo)或在命令菜單中選擇文件

9、>下載來下載程序。 見圖2-11。</p><p>　　2.點(diǎn)擊確定下載程序到S7-200。</p><p>　　圖2-11 下載程序</p><p>　　如果您的S7-200處于運(yùn)行模式，將有一個(gè)對話框提示您CPU將進(jìn)入STOP模式。點(diǎn)擊“是”將S7-200處于STOP模式。</p><p>　　將S7-200轉(zhuǎn)入RUN模式

10、 如果想通過STEP7-- Micro/WIN軟件將S7-200 轉(zhuǎn)入運(yùn)行模式， S7-200的模式開關(guān)必須設(shè)為TERM或者RUN。 當(dāng)S7-200處于RUN模式時(shí)， S7-200執(zhí)行程序： </p><p>　　1. 單擊工具欄上的運(yùn)行圖標(biāo)或在命令菜單中選擇PLC >RUN。</p><p>　　2. 點(diǎn)擊“是”切換模式。</p><p>　　當(dāng) S7-20

11、0轉(zhuǎn)入運(yùn)行模式后，CPU執(zhí)行程序，此時(shí)Q0.0的輸出LED燈時(shí)亮?xí)r滅。</p><p>　　圖 2-12 設(shè)置S7-200在運(yùn)行方式</p><p>　　祝賀您! 您完成了您的第一個(gè)S7-200程序。</p><p>　　您可以通過選擇調(diào)試>程序狀態(tài)監(jiān)測程序。</p><p>　　STEP 7-- Micro/WIN顯示指示的值。 要

12、想停止程序，可以單擊STOP圖標(biāo)或選擇菜單命令PLC >STOP將S7-200置于STOP模式。</p><p><b>　　S7-200的安裝</b></p><p>　　S7-200的設(shè)計(jì)使其便于安裝，可以利用安裝孔把模塊固定在控制柜的背板上，或者利用設(shè)備上的DIN夾子，把模塊固定在一個(gè)標(biāo)準(zhǔn)(DIN)的導(dǎo)軌上。體積小巧的S7-200可以使您更為有效地安排空間

13、。</p><p><b>　　警告！</b></p><p>　　SIMATIC S7-200 PLC是開放型控制器。 它需要在外殼、機(jī)柜或者電氣控制室中安裝S7-200。 只有授權(quán)人員才能進(jìn)入殼、機(jī)柜或者電氣控制室。不遵循這些設(shè)施要求會導(dǎo)致人員死亡或重傷，和/或損傷設(shè)備。當(dāng)安裝S7-200 PLC時(shí)， 一定要遵循這些要求。</p><p>

14、　　將S7-200與熱源，高電壓和電子噪音隔離開</p><p>　　按照慣例，在安裝元器件時(shí)，總是要把產(chǎn)生高壓和高電子噪聲的設(shè)備與諸如S7-200這樣的低壓邏輯類設(shè)備分離開。 在控制柜背板上安排S7-200時(shí)，應(yīng)區(qū)分發(fā)熱裝置并把電子器件安排在控制柜中溫度較低的區(qū)域內(nèi)。電子設(shè)備在一個(gè)高溫環(huán)境里操作會縮短其無故障時(shí)間。</p><p>　　還要考慮面板中設(shè)備的布線。避免將低壓信號線和

15、通信纜繩在與交流供電線和高能量、開關(guān)頻率很高的直流線路布置在一個(gè)線槽中。</p><p>　　為接線和散熱留出充分空間</p><p>　　S7-200設(shè)備的設(shè)計(jì)采用自然對流散熱方式。在器件的上下提供至少25 mm的空間以便于正常的散熱，前面板與背板的板間距離也應(yīng)保持至少75 mm。</p><p><b>　　警告！</b></p>

16、;<p>　　對于垂直安裝，允許的最高環(huán)境溫度降低10攝氏度。S7-200 CPU應(yīng)安裝在所有擴(kuò)展模塊的下方。</p><p>　　在安排S7-200設(shè)備時(shí)，應(yīng)留出接線和連接通信電纜的足夠空間。 當(dāng)配置S7-200系統(tǒng)時(shí)，可以靈活的使用I/O擴(kuò)展電纜。</p><p>　　圖3-1 安裝方式、方向和間距</p><p><b>　　電源定額

17、</b></p><p>　　所有的 S7-200 CPU都有一個(gè)內(nèi)部電源，為CPU自身、擴(kuò)展模塊和其他用電設(shè)備提供24 V直流電源。</p><p>　　S7-200為系統(tǒng)中所有擴(kuò)展模塊提供5V直流邏輯電源。 必須格外注意您的系統(tǒng)配置，要確保CPU所提供的5V電源能夠滿足您所選擇的所有擴(kuò)展模塊的需要。如果您的配置要求超出了CPU的供電能力，您只有去除一些模塊或選擇一個(gè)供電能力

18、更強(qiáng)的CPU。 參考附錄A可得到有關(guān)S7-200 CPU、 5 V直流邏輯電源的供電能力以及擴(kuò)展模塊對5 V直流電源需求的信息。附錄B給出了CPU所能為系統(tǒng)提供功率（電流）大小的計(jì)算方法。</p><p>　　S7-200的所有 CPU也提供24 V直流傳感器供電，此24V直流邏輯電源可以為輸入點(diǎn)，為擴(kuò)展模塊上的繼電器線圈或其他一些設(shè)備提供電能。 如果設(shè)備用電量超過了傳感器供電定額，則您必須為系統(tǒng)另配一個(gè)外部24

19、 V直流電源。對于特定的S7-200 CPU，可以在附錄A中查到其24 V直流傳感器供電電源定額。</p><p>　　如果您使用了外部24 V直流電源，保證電源沒有與S7-200 CPU傳感器電源并聯(lián)。 為了加強(qiáng)電子噪聲保護(hù)，建議將不同的電源的公共端（M）都連在一起。</p><p><b>　　警告！</b></p><p>　　如果外在2

20、4 V直流電源與S7-200的24 V傳感器電源并聯(lián)，每一路電源都試圖建立自己的輸出電壓電平，從而導(dǎo)致兩路電源沖突。</p><p>　　這種沖突的結(jié)果可以是縮短電源自身壽命或一路或二路電源立即損壞，這樣會使PLC系統(tǒng)產(chǎn)生一系列不確定的操作。 這種不確定的操作會導(dǎo)致人員死亡或重傷，和/或損傷設(shè)備。</p><p>　　S7-200 直流傳感器供電和所有外部供電應(yīng)該分別給不同的點(diǎn)提供電源。&

21、lt;/p><p>　　S7-200模塊的安裝和拆卸</p><p>　　S7-200可以容易地安裝在一個(gè)標(biāo)準(zhǔn)DIN路軌或控制柜背板上。</p><p><b>　　必備條件</b></p><p>　　在安裝和拆卸任何電子設(shè)備前，必須保證這個(gè)設(shè)備的電源已經(jīng)切斷了。同樣，也要確保與該設(shè)備相關(guān)聯(lián)的設(shè)備的供電已被切斷。</

22、p><p><b>　　警告！</b></p><p>　　試圖在帶點(diǎn)情況下安裝或拆卸S7-200及其相關(guān)設(shè)備有可能導(dǎo)致觸點(diǎn)或者設(shè)備誤動作。</p><p>　　安裝或拆卸過程期間，如果未能斷開S7-200和相關(guān)設(shè)備的所有電源，會造成死亡或者重傷，并且（或者）損壞設(shè)備。</p><p>　　在安裝和拆卸S7-200及其相關(guān)設(shè)

23、備時(shí)，必須預(yù)先采取適當(dāng)?shù)陌踩胧┎⑶掖_認(rèn)S7-200的供電被切斷。</p><p>　　在更換或者安裝S7-200器件時(shí)，要確保使用了正確的模塊或等同的模塊。</p><p><b>　　警告！</b></p><p>　　如果您安裝了不正確的模塊，S7-200的程序可能會產(chǎn)生錯(cuò)誤的功能。</p><p>　　如果未能使

24、用相同的模塊按照相同的方向和順序替換S7-200的器件，有可能導(dǎo)致死亡或者嚴(yán)重的人身傷害和設(shè)備損壞。</p><p>　　在更換S7-200的器件時(shí)，并除了要使用相同的模塊外，還要確保安裝的方向和位置是正確的。</p><p><b>　　附件2：外文原文</b></p><p>　　Entering Network 3: Resetting

25、the Timer</p><p>　　When the timer reaches the preset value (100) and turns the timer bit on, the contact for T33 turns on. Power flow from this contact turns on the M0.0 memory location. Because the timer is

26、 enabled by a Normally Closed contact for M0.0, changing the state of M0.0 from off (0) to on (1) resets the timer.</p><p>　　To enter the contact for the timer bit of T33:</p><p>　　Figure 2-9

27、Network 3</p><p>　　1. Select the Normally Open contact from the bit logic instructions.</p><p>　　2. Hold down the left mouse button and drag the contact onto the third network.</p><

28、p>　　3. Click on the “???” above the contact and enter the address of the timer bit: T33</p><p>　　4. Press the Return key to enter the address for the contact. </p><p>　　To enter the coil fo

29、r turning on M0.0:</p><p>　　1. Select the output coil from the bit logic instructions.</p><p>　　2. Hold down the left mouse button and drag the output coil onto the third network.</p>&

30、lt;p>　　3. Double-click the “???” above the coil and enter the following address: M0.0</p><p>　　4. Press the Return key to enter the address for the coil.</p><p>　　Saving the Sample Project&

31、lt;/p><p>　　After entering the three networks of instructions, you have finished entering the program. When you save the program, you create a project that includes the S7-200 CPU type and other parameters. To

32、save the project:</p><p>　　1. Select the File > Save As menu command from the menu bar.</p><p>　　2. Enter a name for the project in the Save As dialog box.</p><p>　　3. Click

33、OK to save the project.</p><p>　　Figure 2-10 Saving the Example Program</p><p>　　After saving the project, you can download the program to the S7-200.</p><p>　　Downloading the Samp

34、le Program</p><p><b>　　Tip</b></p><p>　　Each STEP 7-- Micro/WIN project is associated with a CPU type (CPU 221, CPU 222, CPU 224, CPU 224XP, or CPU 226). If the project type does not

35、 match the CPU to which you are connected, STEP 7-- Micro/WIN indicates a mismatch and prompts you to take an action. If this occurs, choose “Continue Download” for this example.</p><p>　　1. Click the Downlo

36、ad icon on the toolbar or select the File > Download menu command to download the program. See Figure 2-11. </p><p>　　2. Click OK to download the elements of the program to the S7-200.</p><p>

37、;　　Figure 2-11 Downloading the Program</p><p>　　Placing the S7-200 in RUN Mode</p><p>　　For STEP 7-- Micro/WIN to place the S7-200 CPU in RUN mode, the mode switch of the S7-200 must be set to

38、TERM or RUN. When you place the S7-200 in RUN mode, the S7-200 executes the program:</p><p>　　1.Click the RUN icon on the toolbar or select the PLC > RU menu command.</p><p>　　2. Click OK to

39、change the operating mode of the S7-200.</p><p>　　Figure 2-12 Placing the S7-200 in RUN Mode</p><p>　　When the S7-200 goes to RUN mode, the output LED for Q0.0 turns on and off as the S7-200 ex

40、ecutes the program.</p><p>　　Congratulations! You have just completed your first S7-200 program.</p><p>　　You can monitor the program by selecting the Debug > Program Status menu command.<

41、;/p><p>　　STEP 7-- Micro/WIN displays the values for the instructions. To stop the program, place the S7-200 in STOP mode by clicking the STOP icon or by selecting the PLC > STOP menu command.</p><

42、;p>　　Guidelines for Installing S7-200 Devices</p><p>　　You can install an S7-200 either on a panel or on a standard rail, and you can orient the S7-200 either horizontally or vertically.</p><p&

43、gt;<b>　　Warning</b></p><p>　　The SIMATIC S7-200 PLCs are Open Type Controllers. It is required that you install the S7-200 in a housing, cabinet, or electric control room. Entry to the housing, c

44、abinet, or electric control room should be limited to authorized personnel.</p><p>　　Failure to follow these installation requirements could result in death or serious injury to personnel, and/or damage to e

45、quipment.</p><p>　　Always follow these requirements when installing S7-200 PLCs.</p><p>　　Separate the S7-200 Devices from Heat, High Voltage, and Electrical Noise</p><p>　　As a gen

46、eral rule for laying out the devices of your system, always separate the devices that generate high voltage and high electrical noise from the low-voltage, logic-type devices such as the S7-200.</p><p>　　Whe

47、n configuring the layout of the S7-200 inside your panel, consider the heat-generating devices and locate the electronic-type devices in the cooler areas of your cabinet. Operating any electronic device in a high-temper

48、ature environment will reduce the time to failure.</p><p>　　Consider also the routing of the wiring for the devices in the panel. Avoid placing low voltage signal wires and communications cables in the sam

49、e tray with AC power wiring and high-energy, rapidly-switched DC wiring.</p><p>　　Provide Adequate Clearance for Cooling and Wiring</p><p>　　S7-200 devices are designed for natural convection c

50、ooling. For proper cooling, you must provide a clearance of at least 25 mm above and below the devices. Also, allow at least 75 mm of depth.</p><p><b>　　Caution</b></p><p>　　For vert

51、ical mounting, the maximum allowable ambient temperature is reduced by</p><p>　　10 degrees C. Mount the S7-200 CPU below any expansion modules.</p><p>　　When planning your layout for the S7-200

52、system, allow enough clearance for the wiring and communications cable connections. For additional flexibility in configuring the layout of the S7-200 system, use the I/O expansion cable.</p><p>　　Figure 3-

53、1 Mounting Methods, Orientation, and Clearance</p><p>　　Power Budget</p><p>　　All S7-200 CPUs have an internal power supply that provides power for the CPU, the expansion modules, and other 24

54、VDC user power requirements.</p><p>　　The S7-200 CPU provides the 5 VDC logic power needed for any expansion in your system. Pay careful attention to your system configuration to ensure that your CPU can sup

55、ply the 5V power required by your selected expansion modules. If your configuration requires more power than the CPU can supply, you must remove a module or select a CPU with more power capability. Refer to Appendix A fo

56、r information about the 5 VDC logic budget supplied by your S7-200 CPU and the</p><p>　　5 VDC power requirements of the expansion modules. Use Appendix B as a guide for determining how much power (or current

57、) the CPU can provide for your configuration.</p><p>　　All S7-200 CPUs also provide a 24 VDC sensor supply that can supply 24 VDC for input points, for relay coil power on the expansion modules, or for other

58、 requirements. If your power requirements exceed the budget of the sensor supply, then you must add an external 24 VDC power supply to your system. Refer to Appendix A for the 24 VDC sensor supply power budget for your p

59、articular S7-200 CPU.</p><p>　　If you require an external 24 VDC power supply, ensure that the power supply is not connected in parallel with the sensor supply of the S7-200 CPU. For improved electrical nois

60、e protection, it is recommended that the commons (M) of the different power supplies be connected.</p><p><b>　　Warning</b></p><p>　　Connecting an external 24 VDC power supply in para

61、llel with the S7-200 24 VDC sensor supply can result in a conflict between the two supplies as each seeks to establish its own preferred output voltage level.</p><p>　　The result of this conflict can be shor

62、tened lifetime or immediate failure of one or both power supplies, with consequent unpredictable operation of the PLC system. Unpredictable operation could result in death or serious injury to personnel, and/or damage to

63、 equipment.</p><p>　　The S7-200 DC sensor supply and any external power supply should provide power to different points.</p><p>　　Installing and Removing the S7-200 Modules</p><p>　

64、　The S7-200 can be easily installed on a standard DIN rail or on a panel.</p><p>　　Prerequisites</p><p>　　Before you install or remove any electrical device, ensure that the power to that equipm

65、ent has been turned off. Also, ensure that the power to any related equipment has been turned off.</p><p><b>　　Warning</b></p><p>　　Attempts to install or remove S7-200 or related eq

66、uipment with the power applied could cause electric shock or faulty operation of equipment.</p><p>　　Failure to disable all power to the S7-200 and related equipment during installation or removal procedures

67、 could result in death or serious injury to personnel, and/or damage to equipment.</p><p>　　Always follow appropriate safety precautions and ensure that power to the S7-200 is disabled before attempting to i

68、nstall or remove S7-200 CPUs or related equipment.</p><p>　　Always ensure that whenever you replace or install an S7-200 device you use the correct module or equivalent device.</p><p><b>　

69、　Warning</b></p><p>　　If you install an incorrect module, the program in the S7-200 could function unpredictably.</p><p>　　Failure to replace an S7-200 device with the same model, orientat

70、ion, or order could result in death or serious injury to personnel, and/or damage to equipment.</p><p>　　Replace an S7-200 device with the same model, and be sure to orient and position it correctly. </p&