6es7 441-1aa03-0ae0
“時鐘是時序電路的控制者”這句話太經典了，可以說是FPGA設計的圣言。FPGA的設計主要是以時序電路為主，因為組合邏輯電路再怎么復雜也變不出太多花樣，理解起來也不沒太多困難。但是時序電路就不同了，它的所有動作都是在時鐘一拍一拍的節奏下轉變觸發，可以說時鐘就是整個電路的控制者，控制不好，電路功能就會混亂。
打個比方，時鐘就相當于人體的心臟，它每一次的跳動就是觸發一個 CLK，向身體的各個器官供血，維持著機體的正常運作，每一個器官體統正常工作少不了組織細胞的構成，那么觸發器就可以比作基本單元組織細胞。
時序邏輯電路的時鐘是控制時序邏輯電路狀態轉換的“發動機”，沒有它時序邏輯電路就不能正常工作。因為時序邏輯電路主要是利用觸發器存儲電路的狀態，而觸發器狀態變換需要時鐘的上升或下降沿，由此可見時鐘在時序電路中的核心作用。
最后簡單說一下體會吧，歸結起來就是多實踐、多思考、多問。實踐出真知，看100遍別人的方案不如自己去實踐一下。實踐的動力一方面來自興趣，一方面來自壓力。有需求會容易形成壓力，也就是說能在實際的項目開發中鍛煉，而不是為了學習而學習。
6es7 441-1aa03-0ae0 1769-BA
1769-BOOLEAN
1769-CJC
1769-CLL1
1769-CLL3
1769-CRL1
1769-CRL3
1769-CRR1
1769-CRR3
1769-ECL
1769-ECR
1769-HSC
1769-IA16
1769-IA8I
1769-IF16C
1769-IF16V
1769-IF4
1769-IF4FXOF2F
1769-IF4I
1769-IF4XOF2
1769-IF8
1769-IG16
1769-IM12
1769-IQ16
1769-IQ16F
1769-IQ32
6es7 441-1aa03-0ae0 Red Lion Controls Digital Inteliigent Meter IMD10102 NR
RED LION CONTROLS TOTALIZER IMP23163
RED LION CONTROLS 68050-000 NSPP 68050000
RED LION CONTROLS ARCJ2BZ0 USPP ARCJ2BZ0
RED LION CONTROLS TCU00000 USPP TCU00000
RED LION CONTROLS TCU00204 USPP TCU00204
RED LION CONTROLS P4800001 USPP P4800001
RED LION CONTROLS ARCJ1AZ0 NSFP ARCJ1AZ0
RED LION CONTROLS IRMA3035 NSFP IRMA3035
RED LION CONTROLS PAXT0000 USPP PAXT0000
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NIB RED LION CONTROLS APLPV410 APOLLO PROCES VOLTMETER
Red Lion Controls Model MDI
Red Lion Counter Control- APLRI600 -
RED LION CONTROLS IMI041621501
RED LION CONTROLS LIBC1E00 USPP LIBC1E00
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RED LION CONTROLS PR100000 NSFP PR100000
APLIT405 Red Lion Controls Current Indicator
RED LION CONTROLS SC2DU 2-LEVEL 10 KHz PRESET COUNTER
RED LION CONTROLS 501 NSFP 501
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RED LION CONTROLS MCI MCI4Y01A MODULE
RED LION CONTROLS C48CD105-(R101) NSFP C48CD105R101
RED LION CONTROLS T4820000 NSFP T4820000
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RED LION CONTROLS APL-SP-3-B0 NSPP APLSP3B0
RED LION CONTROLS PBD20000 USPP PBD20000
RED LION CONTROLS SFOCP405 NSFP SFOCP405
RED LION CONTROLS 4600200 NSFP 4600200
RED LION CONTROLS DT3A0400 NSFP DT3A0400
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RED LION CONTROLS APLIT APOLLO 5 AMP AC CURRENT METER
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3817 Red Lion Controls IMP20100 RPM Meter
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RED LION CONTROLS APLID-400 NSFP APLID400
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RED LION P1641110 PROCESS CONTROL UNIT
RED LION COUNTER RATE CONTROL GEM2 GEM20400 GEM20100
RED LION CONTROLS PAXLR00033065
Red Lion Controls PAXT0010 Temperature Meter PAXT
(4) Red Lion Solid Controls State Timer # LIBT2E10
Red Lion Model PAXP0000 Control Process Unit
RED LION CONTROLS IMP20100 USPP IMP20100
RED LION CONTROLS LSQD0100 NSPP LSQD0100
RED LION CONTROLS APLT0610 NSFP APLT0610
Red Lion Controls Counter Single Preset LED LIBC1E00 !
Red Lion Controls Counter Single Preset LED LGS00101 !
RED LION CONTROLS PAXCK000 USPP PAXCK000
RED LION CONTROLS DITAK-II NSPP DITAKII
RED LION CONTROLS DT3A0400 NSPP DT3A0400
Red Lion Controls TSW0A400
RED LION CONTROLS APL-SP-3-B0 USPP APLSP3B0
RED LION CONTROLS APLSP4A0 USPP APLSP4A0
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RED LION CONTROLS LNXC1020 NSFP LNXC1020
RED LION CONTROLS LNXC1030 NSFP LNXC1030
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RED LION CONTROLS DP5D0000 USPP DP5D0000
RED LION CONTROLS APLT-0600 NSPP APLT0600
RED LION COUNTER RATE CONTROL GEM2 GEM20060
RED LION CONTROLS DIGITAL COUNTER SERIES 600 MODEL 662
RED LION CONTROLS AVMI1133 USPP AVMI1133
RED LION CONTROLS DT3D0500 NSFP DT3D0500
RED LION CONTROLS 5130031 NSFP 5130031
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RED LION CONTROLS PAXTM000 NSFP PAXTM000
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RED LION CONTROLS IMD10000 USPP IMD10000
Red Lion Controls counter OEMIQ006 APLSP3B GOOD!
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RED LION CONTROLS IFMA0065 USPP IFMA0065
RED LION CONTROLS LIBT-1000 USPP LIBT1000
red lion control PAXP0000 input panel meter
Red Lion Controls APLSP4 Apollo Slave Display
RED LION MODEL IMP PANEL PROCESS CONTROL IMP23102 METER
Red Lion Controls Alarm IMT-02069 IMT02069
Red Lion Controls APLSP3B0 Apollo Slave Display
Red Lion Controls Message Center MCS4Y00D
RED LION CONTROLS,VOLT METER APLVD400
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