Bosch NC-SPS現(xiàn)貨
Allen-Bradley(美國AB)系列產(chǎn)品》
Schneider(施耐德電氣)系列產(chǎn)品》
General electric(通用電氣)系列產(chǎn)品》
Westinghouse(美國西屋)系列產(chǎn)品》
SIEMENS(西門子系列產(chǎn)品)》
銷售ABB Robots. FANUCRobots、YASKAWA Robots、KUKA Robots、Mitsubishi Robots、OTC Robots、Panasonic Robots、MOTOMAN Robots
estinghouse(西屋): OVATION系統(tǒng)、WDPF系統(tǒng)、MAX1000系統(tǒng)備件Invensys Foxboro(福克斯波羅):I/A Series系統(tǒng),F(xiàn)BM(現(xiàn)場輸入/輸出模塊)順序控制、梯形邏輯控制、事故追憶處理、數(shù)模轉(zhuǎn)換、輸入/輸出信號處理、數(shù)據(jù)通信及處理等。
Invensys Triconex: 冗余容錯控制系統(tǒng)、基于三重模件冗余(TMR)結(jié)構(gòu)的現(xiàn)代化的容錯控制器。Siemens(西門子):Siemens MOORE, Siemens SimaticC1,Siemens數(shù)控系統(tǒng)等
Bosch Rexroth(博世力士樂):Indramat,I/O模塊,PLC控制器,驅(qū)動模塊等。
Motorola(摩托羅拉):MVME 162、MVME 167、MVME1772、MVME177等系列
態(tài)變量和臨時變量(暫態(tài)變量)兩種。參數(shù)是在調(diào)用塊和被調(diào)用塊間傳遞的數(shù)據(jù)。靜態(tài)變量和臨時變量是僅供邏輯塊本身使用的數(shù)據(jù)。表5.1給出了局部數(shù)據(jù)聲明類型,表中內(nèi)容的排列順序也是在變量聲明
表中聲明變量的順序和變量在內(nèi)存中的存儲順序。在邏輯塊中不需使用的局部數(shù)據(jù)類型,可以不必在變量聲明表中聲明。
表5.1 局部數(shù)據(jù)類型
變 量 名 類 型 說 明
輸入?yún)?shù) In 由調(diào)用邏輯塊的塊提供數(shù)據(jù),輸入給邏輯塊的指令
輸出參數(shù) Out 向調(diào)用邏輯塊的塊返回參數(shù),即從邏輯塊輸出結(jié)果數(shù)據(jù)
IO參數(shù) In_Out 參數(shù)的值由調(diào)用塊的塊提供,由邏輯塊處理修改,然后返回
靜態(tài)變量 Stat 靜態(tài)變量存儲在背景數(shù)據(jù)塊中,塊調(diào)用結(jié)束后,其內(nèi)容被保留
臨時變量 Temp 臨時變量存儲在L堆棧中,塊執(zhí)行結(jié)束變量的值因被其它內(nèi)容覆蓋而丟掉
對于功能塊FB,操作系統(tǒng)為參數(shù)及靜態(tài)變量分配的存儲空間是背景數(shù)據(jù)塊。這樣參數(shù)變量在背景數(shù)據(jù)塊中留有運行結(jié)果備份。在調(diào)用FB時,若沒有提供實參,則功能塊使用背景數(shù)據(jù)塊中的數(shù)值。操作系統(tǒng)在L堆棧中給FB的臨時變量分配存儲空間。
對于功能塊FC,操作系統(tǒng)在L堆棧中給FC的臨時變量分配存儲空間。由于沒有背景數(shù)據(jù)塊,因而FC不能使用靜態(tài)變量。輸入、輸出、IO參數(shù)以指向?qū)崊⒌闹羔樞问酱鎯υ诓僮飨到y(tǒng)為參數(shù)傳遞而保留的額外空間中。
對于組織塊OB來說,其調(diào)用是由操作系統(tǒng)管理的,用戶不能參與。因此,OB只有定義在L堆棧中的臨時變量。
1) 形參
為保證功能塊對同一類設(shè)備控制的通用性,用戶在編程時就不能使用具體設(shè)備對應(yīng)的存儲區(qū)地址參數(shù)(如不能使用I1.0等),而是使用這類設(shè)備的抽象地址參數(shù)。這些抽象參數(shù)稱為形式參數(shù),簡稱形參。將該設(shè)備的相應(yīng)實際存儲區(qū)地址參數(shù)(簡稱實參)傳遞給功能塊,功能塊在運行時以實參替代形參,從而可通過調(diào)用功能塊實現(xiàn)對具體設(shè)備的控制。當對另一設(shè)備控制時,同樣也可通過調(diào)用實參將其傳遞給功能塊。
形參需在功能塊的變量聲明表中定義,實參在調(diào)用功能塊時給出。在功能塊的不同調(diào)用處,可為形參提供不同的實參,但實參的數(shù)據(jù)類型必須與形參一致。用戶程序可定義功能塊的輸入值參數(shù)或輸出值參數(shù),也可定義一參數(shù)作為輸入輸出值。參數(shù)傳遞可將調(diào)用塊的信息傳遞給被調(diào)用塊,也能把被調(diào)用塊的運行結(jié)果返回給調(diào)用塊。
2) 靜態(tài)變量
靜態(tài)變量在PLC運行期間始終被存儲。S7將靜態(tài)變量定義在背景數(shù)據(jù)塊中,當被調(diào)用塊運行時,能讀出或修改靜態(tài)變量;被調(diào)用塊運行結(jié)束后,靜態(tài)變量保留在數(shù)據(jù)塊中。由于只有功能塊FB有關(guān)聯(lián)的背景數(shù)據(jù)塊,因此只能為FB定義靜態(tài)變量。功能塊FC不能有靜態(tài)變量。
RVSI ACUITY CIMATRIX HE1515HD NSFP HE1515HD
Acuity Vision AS-MS20-301 IVS Cimatrix camera sensor
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Bosch NC-SPS
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INDUSTRIAL NUCLEONICS ACCURAY AD-9-055109-30?269 727622008 55169-30269 PCB CIRCUI
INDUSTRIAL NUCLEONICS ACCURAY 1780-52 89-69-0458 PCB CIRCUIT BOARD / CARD / MODU
INDUSTRIAL NUCLEONICS ACCURAY 2H 245855 PCB CIRCUIT BOARD / CARD / MODULE - USED
INDUSTRIAL NUCLEONICS ACCURAY 61458-32835 PCB CIRCUIT BOARD / CARD / MODULE - US
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INDUSTRIAL NUCLEONICS ACCURAY 61461-32438 PCB CIRCUIT BOARD / CARD / MODULE - US
INDUSTRIAL NUCLEONICS ACCURAY 69-00-8052 PCB CIRCUIT BOARD / CARD / MODULE - USE
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