6ES7414-2XK05-0ABO
PLC是采用“顺序扫描,不断循环”的方式进行工作的。即在PLC运行时,CPU根据用户按控制要求编制好并存于用户存储器中的程序,按指令步序号(或地址号)作周期性循环扫描,如无跳转指令,则从**条指令开始逐条顺序执行用户程序,直至程序结束。然后重新返回**条指令,开始下一轮新的扫描。在每次扫描过程中,还要完成对输入信号的采样和对输出状态的刷新等工作。
PLC的一个扫描周期必经输入采样、程序执行和输出刷新三个阶段。
PLC在输入采样阶段:首先以扫描方式按顺序将所有暂存在输入锁存器中的输入端子的通断状态或输入数据读入,并将其写入各对应的输入状态寄存器中,即刷新输入。随即关闭输入端口,进入程序执行阶段。
PLC在程序执行阶段:按用户程序指令存放的先后顺序扫描执行每条指令,经相应的运算和处理后,其结果再写入输出状态寄存器中,输出状态寄存器中所有的内容随着程序的执行而改变。
输出刷新阶段:当所有指令执行完毕,输出状态寄存器的通断状态在输出刷新阶段送至输出锁存器中,并通过一定的方式(继电器、晶体管或晶闸管)输出,驱动相应输出设备工作。
CUTLER HAMMER LOW ENERGY SHUNT TRIP LST1RPK
CUTLER HAMMER LN163HAXNSNNNW?B USPP LN163HAXNSNNNW?B
CUTLER HAMMER LK-21 PILOT LIGHT KIT 120V NIB
CUTLER HAMMER LIT01958 FNFP LIT01958
Cutler Hammer Limit Switch wCable & Head E50SA6P E50DR1 Head 6078
CUTLER HAMMER Limit Switch side rotary with lever 10316H1002
Cutler Hammer Limit Switch E50SB6PC 3975
CUTLER HAMMER LIMIT SWITCH E505A
Cutler Hammer Limit Switch Cat10316H701 No Box
Cutler Hammer Limit Switch 10316H-5975C 10316H5975C
Cutler Hammer Limit Switch 10316H5875C 10316H-5875C
Cutler Hammer Limit Switch 10316H5875C
CUTLER HAMMER LIMIT SWITCH 10316H283 NO BOX 10316H283C
CUTLER HAMMER LIMIT SWITCH 10316H283 10316H283C
CUTLER HAMMER LIGHTING ConTROL PANEL CAT2SL602 2SL602 SLP 120240V60A MAIN
cutler hammer lighting contactor in nema 1 enclosure 120v coil
Cutler Hammer Lighting Contactor Coil 30A C30BNM3A 12195
Cutler Hammer Lighting Contactor C30EN3 Series B1
CUTLER HAMMER LIGHTING ConTACTOR A202K2CAM NIB
CUTLER HAMMER LIGHT ConTACTOR FREEDOM SERIES 200AMP CN35NN3AB COIL120V 3
CUTLER HAMMER LIGHT ConTACTOR 37AMP COIL 110V120V CE15GN3AB 1
CUTLER HAMMER LIGHT ConTACTOR 30AMP 600VAC
CUTLER HAMMER LIGHT ConTACTOR 20AMP CN35BN3 10
CUTLER HAMMER LGK3400KSG 400 AMP MOLDED CASE SWITCH
Cutler Hammer LGH3630NN 600 Amp Circuit Breaker -
CUTLER HAMMER LGH3630NN 600 AMP 600 VOLT 65K COMPLETE CIRCUIT BREAKER WTRIP
Cutler Hammer LGH3630NN 500 AMP TRIP 600 V 3 Pole L630H Circuit Breaker
CUTLER HAMMER LEP3400T52 USPP LEP3400T52
CUTLER HAMMER LDD-3673STW NSPP LDD3673STW
Cutler Hammer LDC3250T52W series C circuit breaker 250amp 3pole w optim trip
Cutler Hammer LDB3600W with LS3600T Trip Circuit Breaker Blue Label
Cutler Hammer LDB 3600 FT33W 600 Amp 3 Pole With 600 Amp Trip
CUTLER HAMMER LD3600 NSFP LD3600
Cutler Hammer LD3600 LD 3600 Breaker
Cutler Hammer LD3600 circuit breaker 3pole 600amp
Cutler Hammer LD3600 Breaker
CUTLER HAMMER LD3600 600 AMP 600 VOLT CIRCUIT BREAKER
CUTLER HAMMER LD3500 USPP LD3500
Cutler Hammer LD3500 500 Amp Circuit Breaker -
CUTLER HAMMER LD3450 USPP LD3450
Cutler Hammer LD3400 400 Amp Circuit Breaker -
CUTLER HAMMER LCL3400F 3 POLE 400 AMP CIRCUIT BREAKER
Cutler Hammer LC3600WK 600 Amp Circuit Breaker
CUTLER HAMMER LC3300F 300 AMP 600 VAC CIRCUIT BREAKER
Cutler Hammer LB3400F LB frame 3 pole 400amp 400amp trip included
CUTLER HAMMER LA-TRI-PAC TRIP UNIT CAT LA3225PT 3 POLE 250AMP
Cutler Hammer LA3400PRF 400amp 3pole thermal mag tri pac
Cutler Hammer LA3200PT LA Tripac Trip Unit 5661D26G27
Cutler Hammer LA2600F 2 pole 600amp trip available
Cutler Hammer L630E Circuit Breaker LGE363ONN
Cutler Hammer L630E cat LGE4630NN 4 pole 600amp breaker
Cutler Hammer L630E
CUTLER HAMMER KW3400F CIRCUIT BREAKER
Cutler Hammer KW3400F 400amp 3pole breaker
CUTLER HAMMER KT3400TA USPP KT3400TA
Cutler Hammer KT3400T thermal magnetic trip unit 400amp 3pole
CUTLER HAMMER KT3400T THERMAL MAGNETIC TRIP UNIT 400 AMP
Cutler Hammer KT3400T circuit breaker trip unit KD3400F
Cutler Hammer KT3400T Ajustable Circuit Breaker Trip Unit 3 Pole 400A
Cutler Hammer KT3300TV thermal magnetic trip unit 300amp 3 pole
CUTLER HAMMER KT3300T USPP KT3300T
Cutler Hammer KT3300T 300amp 3 pole trip unit
CUTLER HAMMER KT3250TA TRIP UNIT 200-250 A 3 POLE THERMAL MAGNETIC TRIP BREAKER
Cutler Hammer KT3250TA series C adjustable therm mag trip unit 200-250amp 3pole
Cutler Hammer KT3250TA series C adju themal magnetic trip unit 200-250amp 3pole
CUTLER HAMMER KT3250T MAGNETIC TRIP UNIT
CUTLER HAMMER KT3200T NSFP KT3200T
CUTLER HAMMER KT3200T 200 AMP TRIP WSHUNT TRIP
CUTLER HAMMER KT-3175-T NSFP KT3175T
CUTLER HAMMER KT3100T NSFP KT3100T
Cutler Hammer KT3100T circuit breaker trip unit KD3400F
Cutler Hammer KS360250A KS 360250 A Breaker
CUTLER HAMMER KS320400D USPP KS320400D
Cutler Hammer KS320400D KS 320400D Circuit Breaker
CUTLER HAMMER KPRL4LC ConNECTING STRAP KIT
CUTLER HAMMER KPRL4FD BREAKER KIT
CUTLER HAMMER KH360400D LIGHTLY
Cutler Hammer KG3300WS43X01 600V 3P 300A GENERATOR BREAKER
CUTLER HAMMER KES3400LSI NSFP KES3400LSI
Cutler Hammer KES3400LSI circuit breaker trip unit
Cutler Hammer KES3250LSI circuit breaker trip unit
Cutler Hammer KES3125LSI in Box
Cutler Hammer KDC3400F 400 AMP DIGITRIP circuit breaker
CUTLER HAMMER KDC3225V NSFP KDC3225V
CUTLER HAMMER KDB3400W USPP KDB3400W
CUTLER HAMMER KDB3400KX24Y12 MOLDED CASE SWITCH 400 AMP 600V 3-POLE
Cutler Hammer KDB3400KWA05S4?9 3pole 400amp molded case switch
CUTLER HAMMER KDB3400 NSPP KDB3400
Cutler Hammer KDB3350W 350amp 3pole with KT3350T trip
CUTLER HAMMER KDB3350 350A600VAC CIRCUIT BREAKER NNB
Cutler Hammer KDB3300W Circuit Breaker with KT3300T Trip 3 Pole 300 Amp 600V
Cutler Hammer KDB3300S45 300amp 3pole breaker
CUTLER HAMMER KDB3300 300AMP 480V W_KT3300T CIRCUIT BREAKER H4700159 B
CUTLER HAMMER KDB3300 300A600VAC CIRCUIT BREAKER NNB
CUTLER HAMMER KDB3250 250A600VAC 3 POLE CIRCUIT BREAKER ConDITION NO BOX
CUTLER HAMMER KDB3200W02 NSFP KDB3200W02
CUTLER HAMMER KDB2400M01S09Y?07X06 CIRCUIT BREAKER 400A 2POLE 600VAC NO BOX
CUTLER HAMMER KDB2400M01S09Y?07X06 BREAKER 400A ConDITION IN BOX
CUTLER HAMMER KDB2400 USPP KDB2400
Cutler Hammer KD4400F 4pole 400amp with 225amp trip installed other trips avail
Cutler Hammer KD35k KD3400F 400A 600VAC 3 Pole Circuit Breaker frame
Cutler Hammer KD3400KA06XO2Y?15 400amp 3pole molded case switch
Cutler Hammer KD3400KA06X02Y?18 molded case switch 400amp 3pole
CUTLER HAMMER KD3400FS NSPP KD3400FS
Cutler Hammer KD3400F With KT3400T Trip Clean See Pics
CUTLER HAMMER KD3400F USPP KD3400F
Cutler Hammer KD3400F 400 Amp 600 V 3 Pole Circuit Breaker
Cutler Hammer KD3400F 3POLE 600V KT3200T 200AMP TRIP
Cutler Hammer KD3400F 3pole 400amp breaker trip units available
Cutler Hammer KD3400Circuit Breaker Type KD 35K 3 pole 400 amp 600 volt
Cutler Hammer KD3400Circuit Breaker Type KD 35K 3 pole 400 amp 600 volt
CUTLER HAMMER KD3400 USPP KD3400
Cutler Hammer KD3400 KD 3400 Circuit Breaker
Cutler Hammer KD3350 Circuit Breaker Type KD 35K 3 pole 350 amp 600 volt
Cutler Hammer KD3350 Circuit Breaker Type KD 35K 3 pole 350 amp 600 volt
Cutler Hammer KD3300 Circuit Breaker Type KD 35K 3 pole 300 amp 600 volt
Cutler Hammer KD3300 Circuit Breaker Type KD 35K 3 pole 300 amp 600 volt
Cutler Hammer KD3250 KD 3250 Circuit Breaker
Cutler Hammer KD3250 Circuit Breaker Type KD 35K 3 pole 250 amp 600 volt
Cutler Hammer KD3250 Circuit Breaker Type KD 35K 3 pole 250 amp 600 volt
Cutler Hammer KD3225WA01S29 225amp 3pole aux sw 1A1B LH MT ST 110-240VAC
Cutler Hammer KD3225 Circuit Breaker Type KD 35K 3 pole 225 amp 600 volt
Cutler Hammer KD3225 Circuit Breaker Type KD 35K 3 pole 225 amp 600 volt
Cutler Hammer KD3200 Circuit Breaker Type KD 35K 3 pole 200 amp 600 volt
Cutler Hammer KD3200 Circuit Breaker Type KD 35K 3 pole 200 amp 600 volt
Cutler Hammer KD315OWA01529 series C 150amp 3pole A1X3PK 1A-1B aux switch
CUTLER HAMMER KD2400F USPP KD2400F
CUTLER HAMMER KD2300 INDUSTRIAL CIRCUIT BREAKER NIB
CUTLER HAMMER KD KD2400F 3 POLE 600V 400 TRIP BREAKER 100% POSITIVE FB
Cutler Hammer KD 3400 F 400 Amp Circuit Breaker 35K
CUTLER HAMMER KD 3400 F 3 POLE 400A 600V CIR BREAKER
Cutler Hammer KB3250F 3 pole KB frame only trip unit available
CUTLER HAMMER KB2250F NSFP KB2250F
CUTLER HAMMER KB-2200 NSFP KB2200
CUTLER HAMMER K15-001126-110?1 NSFP K150011261101
CUTLER HAMMER K13-000034-020?2 NSFP K130000340202
CUTLER HAMMER K13-000034-020?1 USPP K130000340201
CUTLER HAMMER K13-000034-010?7 NSFP K130000340107
CUTLER HAMMER JT3250T USPP JT3250T
CUTLER HAMMER JT3250T TRIP UINIT CHEAP CIRCUIT BREAKER CH C-H CH
CUTLER HAMMER JT3225T USPP JT3225T
Cutler Hammer JT3225T TRIP UNIT 225 AMP 3 POLE JD TM
CUTLER HAMMER JT3225T NSFP JT3225T
Cutler Hammer JT3225T Adjustasble Circuit Breaker Trip Unit 3P 225A 600V
Cutler Hammer JT3225T 225amp 3pole trip unit
CUTLER HAMMER JT3200T USPP JT3200T
CUTLER HAMMER JT3200T NSFP JT3200T
Cutler Hammer JT3200T circuit breaker trip unit JD3250F
CUTLER HAMMER JT3175T USPP JT3175T
CUTLER HAMMER JT3150T USPP JT3150T
CUTLER HAMMER JT3150T NSFP JT3150T
CUTLER HAMMER JT3125T USPP JT3125T
CUTLER HAMMER JT3125T NSFP JT3125T
CUTLER HAMMER JT2200FA NSFP JT2200FA
CUTLER HAMMER JS360225A CIRCUIT BREAKER
CUTLER HAMMER JS360225A CIRCUIT BREAKER
CUTLER HAMMER JHMVD06B NSFP JHMVD06B