IC693CMM311
IC693CMM311
IC693CMM311
CPU主要由運算器、控制器、寄存器及實現它們之間聯系的數據、控制及狀態總線構成,CPU單元還包括外圍芯片、總線接口及有關電路。內存主要用于存儲程序及數據,是PLC不可缺少的組成單元。
在使用者看來,不必要詳細分析CPU的內部電路,但對各部分的工作機制還是應有足夠的理解。CPU的控制器控制CPU工作,由它讀取指令、解釋指令及執行令。但工作節奏由震蕩信號控制。運算器用于進行數字或邏輯運算,在控制器指揮下工作。寄存器參與運算,并存儲運算的中間結果,它也是在控制器指揮下工作。
CPU速度和內存容量是PLC的重要參數,它們決定著PLC的工作速度,IO數量及軟件容量等,因此限制著控制規模。
I/O模塊
PLC與電氣回路的接口,是通過輸入輸出部分(I/O)完成的。I/O模塊集成了PLC的I/O電路,其輸入暫存器反映輸入信號狀態,輸出點反映輸出鎖存器狀態。輸入模塊將電信號變換成數字信號進入PLC系統,輸出模塊相反。I/O分為開關量輸入(DI),開關量輸出(DO),模擬量輸入(AI),模擬量輸出(AO)等模塊。
常用的I/O分類如下:
開關量:按電壓水平分,有220VAC、110VAC、24VDC,按隔離方式分,有繼電器隔離和晶體管隔離。
模擬量:按信號類型分,有電流型(4-20mA,0-20mA)、電壓型(0-10V,0-5V,-10-10V)等,按精度分,有12bit,14bit,16bit等。
除了上述通用IO外,還有特殊IO模塊,如熱電阻、熱電偶、脈沖等模塊。
按I/O點數確定模塊規格及數量,I/O模塊可多可少,但其最大數受CPU所能管理的基本配置的能力,即受最大的底板或機架槽數限制。
電源模塊
PLC電源用于為PLC各模塊的集成電路提供工作電源。同時,有的還為輸入電路提供24V的工作電源。電源輸入類型有:交流電源(220VAC或110VAC),直流電源(常用的為24VDC)。
底板或機架
大多數模塊式PLC使用底板或機架,其作用是:電氣上,實現各模塊間的聯系,使CPU能訪問底板上的所有模塊,機械上,實現各模塊間的連接,使各模塊構成一個整體。
Namco Controls snap lock limit switch 080 12904
NAMCO EA700 20926 LIMIT SWITCH EA70020926 SNAP-LOCK
SNAP-LOCK LIMIT SWITCH NAMCO CONTROLS EA080 11100
SCHRADER BELLOWS EA700-10000 SNAP LOCK LIMIT SWITCH
NAMCO EA70040054 LIMIT SWITCH EA700 40054 SNAP-LOCK
3712 NEW Namco EA15010013 Snap-Lock Limit Switch
NAMCO EA180 25302 SNAP-LOCK LIMIT SWITCH
NAMCO SNAP LOCK LIMIT SWITCH EA700-10936
NAMCO EA700-70001 SNAP-LOCK LIMIT SWITCH
2 NAMCO SNAP LOCK LIMIT SWITCH EA700-80000 600V 5AC NIB
Namco Snap-Lock Reed Limit Switch EA330-00005 M-V2 NIB
NAMCO SNAP-LOCK LIMIT SWITCH # EA700-70001
NAMCO SNAP-LOCK LIMIT SWITCH EA700-70100 700-70100
Snap-Lock Limit Switch EA700-10000
NAMCO EA700 25000 LIMIT SWITCH EA70025000 SNAP-LOCK
NAMCO EA700 20926 LIMIT SWITCH SNAP-LOCK EA70020926
NIB NAMCO/SNAP-LOCK LIMIT SWITCH EA170-51100
3 NAMCO SNAP LOCK LIMIT SWITCH EA700-80000 600V 5AC NIB
NAMCO EA 080-11100 SNAP LOCK LIMIT SWITCH
Namco EA170-32302 Snap Lock Limit Switch
Namco Snap-lock Limit Switch NEW 170-12100
Namco EA170-42100 Snap Lock Limit Switch EA17042100 New
Namco Snap Lock Limit Switch EA17011100
NAMCO SNAP-LOCK # EA700-45000 LIMIT SWITCH
NAMCO EA080-111000 SNAP-LOCK LIMIT SWITCH 080 NIB
3 NAMCO SNAP LOCK LIMIT SWITCH EA700-70000 NIB 1NO/1NC
NAMCO SNAP-LOCK LIMIT SWITCH EA080-11100 EA08011100 NEW
Snap-Lock Limit Switch EA70010000
NAMCO CONTROLS EA180-24302 SNAP-LOCK LIMIT SWITCH NEW
NAMCO SNAP-LOCK LIMIT SWITCH # EA700-40100
NAMCO CONTROLS EA740-80120 SNAP-LOCK LIMIT SWITCH NEW
NAMCO CONTROLS EA180-12302 SNAP-LOCK LIMIT SWITCH NEW
NAMCO CONTROLS EA74080120 SNAP-LOCK LIMIT SWITCH NEW
Namco Snap-lock Limit Switch NEW 170-31100
Namco Snap-Lock Limit Switch EA330-00085 NEW
Namco Controls Snap-Lock Limit Switch 08043130
Namco Snap Lock Limit Switch Model EA170-34100
NAMCO CONTROLS EA740-20100 SNAP-LOCK LIMIT SWITCH NEW
NIB NAMCO SNAP-LOCK LIMIT SWITCH EA180-12302
NAMCO CONTROLS EA180-11302 SNAP-LOCK LIMIT SWITCH NEW
NAMCO SNAP-LOCK # EA200GNPBR220 LIMIT SWITCH
Namco EA700-50100 Snap Lock Limit Switch EA70050100 New
Namco EA080-11100 Snap Lock Limit Switch EA08011100 New
NAMCO SNAP-LOCK LIMIT SWITCH EA080-21500 EA08021500 NEW
NAMCO SNAP-LOCK LIMIT SWITCH EA080-21500 EA08021500
NIB NAMCO SNAP-LOCK LIMIT SWITCH EA700-90964 SL4C-64-L
Namco Snap-Lock Limit Switch EA700-50100 EA70050100
NAMCO EA170-42100 LIMIT SWITCH SNAP-LOCK EA17042100 NEW
Namco Controls Corp. Snap-Lock Limit Switch EA15030275
NOS! NAMCO SNAP LOCK LIMIT SWITCH EA040-11100
Namco EA040-11100 Snap-Lock Limit Switch New
Namco Snap Lock Limit Switch EA080-12100
NAMCO CONTROLS EA990-00083 SNAP-LOCK LIMIT SWITCH NEW
1 NAMCO EA-080-23100 SNAP LOCK LIMIT SWITCH NIB (3395)
NAMCO EA040 21100 LIMIT SWITCH EA04021100 SNAP-LOCK NEW
NAMCO Snap-Lock Limit Switch EA 700-70030 EA70070030
Namco Snap-Lock Limit Switch EA170-12100
NAMCO CONTROLS LIMIT SWITCH SNAP LOCK EA70026100
Namco Snap-Lock Limit Switch EA 080-01914 NEW (3406)
Namco Snap Lock Control Limit Switch 180 31302 New
Namco Snap-Lock Limit Switch EA15010013 NEW (3405)
NAMCO EA15030243 Snap-Lock Limit Switch NEW-NO BOX
Namco Controls Snap-Lock Limit Switch EA70040000
Namco Snap-Lock Limit Switch EA 08043130 EA08043130 NIB
NAMCO SNAP LOCK LIMIT SWITCH SL2 P1
Snap Lock D2400X Limit Switch By Namco New In The Box
NAMCO SNAP-LOCK LIMIT/MICRO SWITCH 170-11100 600V
NAMCO Snap-Lock Limit Switch Arm Lever EL020-56421
Snap Lock EA08011905 Limit Switch
Namco Snap-Lock Limit Switch EA15030275
Snap-Lock EA080-22100 Limit Switch
NAMCO EA080 11105 SNAP-LOCK LIMIT SWITCH NEW
NAMCO Snap-Lock Limit Switch EA990-00125 NEW
Namco Snap-Lock Limit Switch EA70090001 NOS in Box
Namco Snap-Lock Limit Switch EA04021100 NOS in Box
NAMCO EA80-11100 SNAP LOCK LIMIT SWITCH 080 11100
Namco Snap-Lock Limit Switch EA70090000 NOS in Box
Namco Snap-Lock Limit Switch EA17046302 NOS in Box
NAMCO EA080-111000 SNAP-LOCK LIMIT SWITCH
NAMCO SNAP LOCK LIMIT SWITCH 16D-HL1200-2
NIB NAMCO EA080-21130 EA08021130 SNAP-LOCK LIMIT SWITCH
NAMCO CONTROLS LIMIT SWITCH SNAP LOCK EA 700 50100
NIB NAMCO EA700-10000 EA70010000 SNAP LOCK LIMIT SWITCH
NIB NAMCO EA080-11130 EA08011130 SNAP LOCK LIMIT SWITCH
Namco Limit Switch EA150-30275 Snap-Lock new
Snap-lock 16D-HL1200 Explosion Proof Limit Switch
NIB NAMCO SNAP-LOCK LIMIT SWITCH EA170-15302
NIB NAMCO SNAP-LOCK LIMIT SWITCH EA180-34302
EA700-46000 Namco Snap-Lock Limit Switch . NIB
Namco Limit Switch EA180-22302 Snap-Lock New NOS
Namco SNAP-LOCK Limit Switch EA700-40000 EA70040000
Namco Limit Switch EA150-30275 Snap-Lock
NIB NAMCO SNAP-LOCK LIMIT SWITCH EA170-12302
NAMCO FA150-30275 SNAP LOCK LIMIT SWITCH 125V 15A NNB
NIB NAMCO SNAP-LOCK LIMIT SWITCH EA170-12302 REV S
NAMCO EA700-70826 SNAP LOCK LIMIT SWITCH NEW IN BOX
Namco EA700-50100 Snap Lock Limit Switch - New
NAMCO CONTROLS EA180 25302 SNAP LOCK LIMIT SWITCH
NAMECO SNAP-LOCK LIMIT SWITCH 900-00114
Namco Snap-Lock Limit Switch SL3C 125-600VAC NOS
NAMCO SNAP-LOCK 080-21105 HEAVY DUTY LIMIT SWITCH NIB
Namco EA150-30014 Limit Switch Snap-Lock new
Namco EA180 31302 M Snap Lock Control Limit Switch,NIB
Namco EA700-80000 Snap Lock Limit Switch
NAMCO EA170-31100 Snap-Lock Limit Switch 170-31100 NEW
Namco 700-53404 Snap Lock Limit Switch 600VAC ! WOW !
ACME SNAP LOCK LIMIT SWITCH 16D 1200 115V AC 575V AC
NAMCO SNAP-LOCK LIMIT SWITCH EA15030500 EA150-30500
NAMCO MODEL EA700-70100 SNAP-LOCK LIMIT SWITCH NIB!!
NAMCO SNAP-LOCK 080-11105 LIMIT SWITCH
NAMCO EA170-31100 SNAP LOCK LIMIT SWITCH
NAMCO CONTROLS 180-14302 SNAP LOCK LIMIT SWITCH NIB!
NAMCO MODEL 080-211 00 SNAP-LOCK LIMIT SWITCH NNB!!
NAMCO SNAP LOCK LIMIT SWITCH 8041100 NEW
Namco EA700-20926 Snap Lock Limit Switch
NAMCO MODEL EA15030274 SNAP-LOCK LIMIT SWITCH LNC
NAMCO 080-11100 SNAP LOCK LIMIT SWITCH NIB
NAMCO Snap Lock LIMIT SWITCH EA700-70000 NIB NO/NC
NAMCO MODEL EA08041100 SNAP-LOCK LIMIT SWITCH NNB!!
Namco EA170-32100 Snap-Lock Limit Switch
SNAP-LOCK LIMIT SWITCH NAMCO CONTROLS 700-80926
Namco EA04011100 Snap-Lock Limit Switch
Namco 700-43400 Snap Lock Limit Switch 600VAC ! WOW !
NAMCO MODEL EA080-01914 SNAP-LOCK LIMIT SWITCH NNB!!
NAMCO MODEL SL3-B2 SNAP-LOCK LIMIT SWITCH NIB!!
NAMCO CONTROLS SNAP-LOCK LIMIT SWITCH EA080-21100
Namco EA170-31100 Snap-Lock Limit Switch
NAMCO SNAP LOCK LIMIT SWITCH HI TEMP EA700-80126 150C
Namco Controls snap lock limit switch 080 12904
SNAP-LOCK LIMIT SWITCH NAMCO CONTROLS 170 21300
NAMCO MODEL EA08041123 SNAP-LOCK LIMIT SWITCH NNB!!
Namco Controls EA170-33100 Snap-Lock Limit Switch
NAMCO EA080-111000 Snap-Lock Limit Switch ! WOW !
NAMCO EA080-21100 Snap-Lock Limit Switch ! NEW !
SNAP-LOCK LIMIT SWITCH 180-12302
New- Namco Snap Lock Limit Switch EA080-13100
NAMCO MODEL EA15010013 SNAP-LOCK LIMIT SWITCH NEW
NAMCO EA700-70000 Snap-Lock Limit Switch ! WOW !
NAMCO SNAP-LOCK LIMIT SWITCH EA170-35100 NEW LOOK!
NAMCO EA170-12302 SNAP-LOCK LIMIT SWITCH EA17012302 NEW
NAMCO EA170-11302 SNAP-LOCK LIMIT SWITCH EA17011302 NEW
Namco SL2L Snap-Lock Limit Switch - NEW IN BOX
NAMCO EA700-76100 Snap-Lock Limit Switch ! WOW !
MIB NAMCO CONTROLSEA700 90162 SNAP LOCK LIMIT SWITCH*
在線咨詢 
