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1756-IB32@AB&伺服電機(jī)@IC697CMM7111756-IB32@AB&伺服電機(jī)@IC697CMM7111756-IB32@AB&伺服電機(jī)@IC697CMM7111756-IB32@AB&伺服電機(jī)@IC697CMM7111756-IB32@AB&伺服電機(jī)@IC697CMM7111756-IB32@AB&伺服電機(jī)@IC697CMM7111756-IB32@AB&伺服電機(jī)@IC697CMM7111756-IB32@AB&伺服電機(jī)@IC697CMM7111756-IB32@AB&伺服電機(jī)@IC697CMM7111756-IB32@AB&伺服電機(jī)@IC697CMM7111756-IB32@AB&伺服電機(jī)@IC697CMM7111756-IB32@AB&伺服電機(jī)@IC697CMM7111756-IB32@AB&伺服電機(jī)@IC697CMM7111756-IB32@AB&伺服電機(jī)@IC697CMM7111756-IB32@AB&伺服電機(jī)@IC697CMM7111756-IB32@AB&伺服電機(jī)@IC697CMM7111756-IB32@AB&伺服電機(jī)@IC697CMM7111756-IB32@AB&伺服電機(jī)@IC697CMM7111756-IB32@AB&伺服電機(jī)@IC697CMM7111756-IB32@AB&伺服電機(jī)@IC697CMM7111756-IB32@AB&伺服電機(jī)@IC697CMM7111756-IB32@AB&伺服電機(jī)@IC697CMM7111756-IB32@AB&伺服電機(jī)@IC697CMM7111756-IB32@AB&伺服電機(jī)@IC697CMM7111756-IB32@AB&伺服電機(jī)@IC697CMM7111756-IB32@AB&伺服電機(jī)@IC697CMM7111756-IB32@AB&伺服電機(jī)@IC697CMM7111756-IB32@AB&伺服電機(jī)@IC697CMM7111756-IB32@AB&伺服電機(jī)@IC697CMM711
用戶程序存儲器用于存放用戶載入的PLC應(yīng)用程序,載入初期的用戶程序因需修改與調(diào)試,所以稱為用戶調(diào)試程序,存放在可以隨機(jī)讀寫操作的隨機(jī)存取存儲器RAM內(nèi)以方便用戶修改與調(diào)試。
通過修改與調(diào)試后的程序稱為用戶執(zhí)行程序,由于不需要再作修改與調(diào)試,所以用戶執(zhí)行程序就被固化到EPROM內(nèi)長期使用。
PLC內(nèi)的存儲器主要用于存放系統(tǒng)程序、用戶程序和數(shù)據(jù)等。
1)系統(tǒng)程序存儲器
PLC系統(tǒng)程序決定了PLC的基本功能,該部分程序由PLC制造廠家編寫并固化在系統(tǒng)程序存儲器中,主要有系統(tǒng)管理程序、用戶指令解釋程序和功能程序與系統(tǒng)程序調(diào)用等部分。
系統(tǒng)管理程序主要控制PLC的運(yùn)行,使PLC按正確的次序工作;用戶指令解釋程序?qū)LC的用戶指令轉(zhuǎn)換為機(jī)器語言指令,傳輸?shù)紺PU內(nèi)執(zhí)行;功能程序與系統(tǒng)程序調(diào)用則負(fù)責(zé)調(diào)用不同的功能子程序及其管理程序。
系統(tǒng)程序?qū)儆谛栝L期保存的重要數(shù)據(jù),所以其存儲器采用ROM或EPROM。ROM是只讀存儲器,該存儲器只能讀出內(nèi)容,不能寫入內(nèi)容,ROM具有非易失性,即電源斷開后仍能保存已存儲的內(nèi)容。
EPEROM為可電擦除只讀存儲器,須用紫外線照射芯片上的透鏡窗口才能擦除已寫入內(nèi)容,可電擦除可編程只讀存儲器還有E2PROM、FLASH等。
中央處理器(CPU)由控制器、運(yùn)算器和寄存器組成并集成在一個(gè)芯片內(nèi)。CPU通過數(shù)據(jù)總線總線、地址總線、控制總線和電源總線與存儲器、輸入輸出接口、編程器和電源相連接。
小型PLC的CPU采用8位或16位微處理器或單片機(jī),如8031、M68000等,這類芯片價(jià)格很低;中型PLC的CPU采用16位或32位微處理器或單片機(jī),如8086、96系列單片機(jī)等,這類芯片主要特點(diǎn)是集成度高、運(yùn)算速度快且可靠性高;而大型PLC則需采用高速位片式微處理器。
CPU按照PLC內(nèi)系統(tǒng)程序賦予的功能指揮PLC控制系統(tǒng)完成各項(xiàng)工作任務(wù)。
PLC基本組成包括中央處理器(CPU)、存儲器、輸入/輸出接口(縮寫為I/O,包括輸入接口、輸出接口、外部設(shè)備接口、擴(kuò)展接口等)、外部設(shè)備編程器及電源模塊組成,見圖1。PLC內(nèi)部各組成單元之間通過電源總線、控制總線、地址總線和數(shù)據(jù)總線連接,外部則根據(jù)實(shí)際控制對象配置相應(yīng)設(shè)備與控制裝置構(gòu)成PLC控制系統(tǒng)。
PTQ-PDPMV1
140CPU11302 Quantum
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Quantum Hot Standby 雙機(jī)熱備
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Quantum Power Supply 電源模板
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Quantum Digital Input Module 開關(guān)量輸入模板
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Quantum Digital Output Module 開關(guān)量輸出模板
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Quantum Intelligent Module 智能模板
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Quantum Backplane 背板
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Quantum Distributed I/O (Modbus Plus) 分布式I/O
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Quantum Cablefast Connection Cablefast 預(yù)接線系統(tǒng)
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Quantum Terminal Block and Accecories 端子連接器及附件
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Safety Quantum系統(tǒng)
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