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合信技術(shù)CTSC-200系列PLC全新升級(jí),在繼承原有高性能特點(diǎn)的基礎(chǔ)上,為用戶提供更多功能體驗(yàn):
CTSC-200系列PLC和Copanel TP-i系列HMI標(biāo)配10M/100M以太網(wǎng)通信口:
1.基于MODBUS TCP協(xié)議的以太網(wǎng)連接使得多PLC之間的通訊快速而可靠;
2.基于MODBUS TCP協(xié)議的以太網(wǎng)連接使得HMI、PLC、上位機(jī)通信更加簡(jiǎn)易;
3.用戶可以使用合信技術(shù)提供的遠(yuǎn)程服務(wù)通過(guò)Internet對(duì)遠(yuǎn)端的PLC進(jìn)行編程、調(diào)試、監(jiān)控。
CoPanel TP-i系列HMI支持WIFI功能:
1.多個(gè)TP-i系列HMI可以作為WIFI AP熱點(diǎn),或者通過(guò)WIFI WDS接入無(wú)線網(wǎng)絡(luò),以太網(wǎng)口和RS485接口支持各種品牌PLC的協(xié)議;
2.移動(dòng)手機(jī)的HMI客戶端軟件可通過(guò)TP-i系列觸摸屏實(shí)現(xiàn)遠(yuǎn)程監(jiān)控;
3.TP-i系列HMI的USB口可直接連接3G上網(wǎng)卡,連接到Internet。
CTS7-216-2BD-0X40.png
產(chǎn)品特點(diǎn):
CTSC-200系列PLC升級(jí)版:
1.位指令時(shí)間0.05μs;
2.大72KB程序空間;
3.大110KB數(shù)據(jù)空間;
4.支持CAN主站;
5.RS485/以太網(wǎng)通信口;
6.支持7個(gè)擴(kuò)展模塊。
FOXBORO P0400DA-0P 由【福州聚福興自動(dòng)化有限公司】?jī)?yōu)惠供應(yīng).
(1) 功能塊FC實(shí)參的指針存到調(diào)用塊的L堆棧;
(2) 調(diào)用塊的地址和返回位置存儲(chǔ)在塊堆棧,調(diào)用塊的局部數(shù)據(jù)壓入L堆棧;
(3) 功能塊存儲(chǔ)臨時(shí)變量的L堆棧區(qū)被推入L堆棧上部;
(4) 當(dāng)被調(diào)用功能塊FC結(jié)束時(shí),先前塊的信息存儲(chǔ)在塊堆棧中,臨時(shí)變量彈出L堆棧。
因?yàn)楣δ軌KFC不用背景數(shù)據(jù)塊,不能分配初始數(shù)值給功能塊FC的局部數(shù)據(jù),所以必須給功能塊FC提供實(shí)參。
STEP 7為功能塊FC提供了一個(gè)特殊的返回值輸出參數(shù)(關(guān)鍵字:RET_VAL)。當(dāng)在文本文件中創(chuàng)建功能塊FC時(shí),你可以在定義功能塊FC命令后輸入數(shù)據(jù)類型(如BOOL或INT)。對(duì)文本文件進(jìn)行編譯時(shí),STEP 7會(huì)自動(dòng)生成RET_VAL輸出參數(shù)。當(dāng)用STEP 7的程序編輯器(Program Editor)以增量模式創(chuàng)建功能塊FC時(shí),可在FC的變量聲明表中聲明一個(gè)輸出參數(shù)RET_VAL,并指明其數(shù)據(jù)類型。
功能塊編程與調(diào)用舉例
對(duì)功能塊編程分兩步進(jìn)行:步是定義局部變量(填寫局部變量表);第二步是編寫要執(zhí)行的程序,可以用梯形圖或語(yǔ)句表兩種形式編程,并在編程過(guò)程中使用定義了的局部變量(數(shù)據(jù))。
定義局部變量的工作內(nèi)容包括:
(1) 分別定義形參、靜態(tài)變量和臨時(shí)變量(FC塊中不包括靜態(tài)變量);
(2) 確定各變量的聲明類型(Decl.)、變量名(Name)和數(shù)據(jù)類型(Data Type),還要為變量設(shè)置初始值(Initial Value)(盡管對(duì)有些變量初始值不一定有意義)。如果需要還可為變量注釋(Comment)。在增量編程模式下,STEP 7將自動(dòng)產(chǎn)生局部變量地址(Address)。
寫功能塊程序時(shí),可以用以下兩種方式使用局部變量:
(1) 使用變量名,此時(shí)變量名前加前綴“#”,以區(qū)別于在符號(hào)表中定義的符號(hào)地址。增量方式下,前綴會(huì)自動(dòng)產(chǎn)生。
(2) 直接使用局部變量的地址,這種方式只對(duì)背景數(shù)據(jù)塊和L堆棧有效。
在調(diào)用FB塊時(shí),要說(shuō)明其背景數(shù)據(jù)塊。背景數(shù)據(jù)塊應(yīng)在調(diào)用前生成,其順序格式與變量聲明表必須保持一致。在增量方式下,調(diào)用FB塊時(shí),STEP 7會(huì)自動(dòng)提醒并生成背景數(shù)據(jù)塊。此時(shí)也為背景數(shù)據(jù)塊設(shè)置了初始值,該初始值與變量聲明表中的相同。當(dāng)然也可以為背景數(shù)據(jù)塊設(shè)置當(dāng)前值(Current Value),即存儲(chǔ)在CPU中的數(shù)值。
1.二分頻器
假設(shè)功能塊FC10是二分頻器產(chǎn)生程序,功能是對(duì)不同的輸入位進(jìn)行二分頻處理。以下給出了FC10的變量聲明表和語(yǔ)句表程序。在程序中使用了跳變沿檢測(cè)指令。
1) FC10的變量聲明表(見表5.3)
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