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PLC的中央处理器（CPU 一般由控制器、运算器和寄存器组成，这些电路都集成在一个芯片内。CPU通过数据总线、地址总线和控制总线与存储单元、输入/输出接口电路相连接。
与一般的计算机一样，CPU是整个PLC的控制中枢，它按PLC中系统程序赋予的功能指挥PLC有条不紊的进行工作。CPU主要完成下述工作：
（1）接收、存储用户通过编程器等输入设备输入的程序和数据。
（2）用扫描的方式通过I/O部件接收现场信号的状态或数据，并存入输入映像寄存器或数据存储器中。
（3）诊断PLC内部电路的工作故障和编程中的语法错误等。
（4） PLC进入运行状态后，执行用户程序，完成各种数据的处理、传输和存储相应的内部控制信号，以完成用户指令规定的各种操作。
（5）响应各种外围设备(如编程器、打印机等）的请求。
PLC采用的CPU随机型不同而不同， 目前，小型PLC为单CPU系统，中型及大型则采用双CPU甚至多CPU系统。目前，PLC通常采用的微处理器有三种：通用微处理器、单片微处理器（即单片机）、位片式微处理器。
PHOENIX CONTACT 2723071, IBS ISA RI/I-T
PHNIX CONTACT 2878638, IB IL SGI 2/F-PAC
PHNIX CONTACT 2878638, IB IL SGI 2/F-PAC
Phoenix Contact, MSTB 2,5/15-ST-5,08, 1757145
PHOENIX CONTACT 2831060, FL IBS SC/I-T
PHNIX CONTACT 2878638, IB IL SGI 2/F-PAC
Phoenix Contact, MSTB 2,5/15-ST-5,08, 1757145
PHOENIX CONTACT 2831060, FL IBS SC/I-T
Phoenix Contact, MSTB 2,5/13-ST-5,08, 1757129
Phoenix Contact, MSTB 2,5/13-ST-5,08, 1757129
PHOENIX CONTACT 2723068, IBS IP 24 V.24
Phoenix Contact, MSTB 2,5/10-ST-5,08, 1757064
Phoenix Contact, MSTB 2,5/12-ST-5,08, 1757116
PHOENIX CONTACT 2719247, IBSL BOX 24 DI8/4 M12
Phoenix Contact QUINT-DC-UPS/24DC/40, 2866242
PHOENIX CONTACT 2719797, IBSL BOX 24 DO4/4-M12-2A
PHOENIX CONTACT 2719247, IBSL BOX 24 DI8/4 M12
Phoenix Contact, MSTB 2,5/9-ST-5,08, 1757080
Phoenix Contact QUINT-DC-UPS/24DC/40, 2866242
PHOENIX CONTACT 2719797, IBSL BOX 24 DO4/4-M12-2A, I/O-module
Phoenix Contact, MSTB 2,5/9-ST-5,08, 1757080
Phoenix Contact IBS-PB CT 24 IO GT-T, 2742751
PHOENIX CONTACT 2832771, FL SWITCH SF 8TX
Phoenix Contact, MSTB 2,5/11-ST-5,08, 1757103
Phoenix Contact IBS-PB CT 24 IO GT-T, 2742751
PHNIX CONTACT 2861852, IB IL CNT-PAC
PHOENIX CONTACT 2832771, FL SWITCH SF 8TX
Phoenix Contact, MSTB 2,5/11-ST-5,08, 1757103
PHNIX CONTACT 2861852, IB IL CNT-PAC
PHNIX CONTACT 2861852, IB IL CNT-PAC
PHOENIX CONTACT 2719807, IBSL BOX 24 DIO2/2/4 M12-2A
PHOENIX CONTACT 2719807, IBSL BOX 24 DIO2/2/4 M12-2A-D
PHOENIX CONTACT 2719807, IBSL BOX 24 DIO2/2/4 M12-2A-D
PHOENIX CONTACT 2766465, MCR-SWS-U
PHOENIX CONTACT 2736385, FLS IB M12 DIO8/8 M12, I/O Gert
PHOENIX CONTACT 2719784, IBSL BOX 24 DI4/4-M12, I/O-Modul
PHOENIX CONTACT 2736385, FLS IB M12 DIO8/8 M12, I/O
PHOENIX CONTACT 2719784, IBSL BOX 24 DI4/4-M12
Phoenix Contact, MSTB 2,5/8-ST-5,08, 1757077
PHOENIX CONTACT 2862385, ILB IB 24 DI16DO16, I/O-Modul
PHOENIX CONTACT 2719412, IBSL BOX 24 DO2/2-M12-2A
PHOENIX CONTACT 2719412, IBSL BOX 24 DO2/2-M12-2A
PHNIX CONTACT 2862835, IB IL 24 DI 32/HD-PAC
PHOENIX CONTACT 2719412, IBSL BOX 24 DO2/2-M12-2A,
Phoenix Contact, 2752961, IBS STME 24 BKDIO8/8/3-T
Phoenix Contact 2866378, DC/DC converters - Quint-PS- 24DC/24DC/10
PHOENIX CONTACT 2724533, IBSL MLR PLSET4-6A
PHOENIX CONTACT 2720294, IBSL BOX24DI 2/2 M12-D
Phoenix Contact, 2752961, IBS STME 24 BKDIO8/8/3-T
PHOENIX CONTACT 0911186, USED16
PHNIX CONTACT 2861580, IBS IL 24 BK-T/U-PAC
PHOENIX CONTACT 2724533, IBSL MLR PLSET4-6A
Phoenix Contact 2866378, DC/DC converters - Quint-PS- 24DC/24DC/10
PHOENIX CONTACT 2720294, IBSL BOX24DI 2/2 M12-D
PHOENIX CONTACT 2724533, IBSL MLR PLSET4-6A
PHNIX CONTACT 2861580, IBS IL 24 BK-T/U-PAC
PHOENIX CONTACT 2720294, IBSL BOX24DI 2/2 M12-D
PHOENIX CONTACT 0911186, USED 16, fuse holder (1PU=9Pcs.)
PHNIX CONTACT 2861580, IBS IL 24 BK-T/U-PAC
PHNIX CONTACT 2861302, IB IL AI 2/SF-PAC
PHOENIX CONTACT 2878722, IB IL RS 232-PRO-PAC
PHNIX CONTACT 2861302, IB IL AI 2/SF-PAC
PHNIX CONTACT 2861302, IB IL AI 2/SF-PAC
PHOENIX CONTACT 2878722, IB IL RS 232-PRO-PAC
PHNIX CONTACT 2862822, IB IL 24 DO 32/HD-PAC
PHOENIX CONTACT 2878722, IB IL RS 232-PRO-PAC
PHNIX CONTACT 2862822, IB IL 24 DO 32/HD-PAC
PHNIX CONTACT 2862822, IB IL 24 DO 32/HD-PAC
PHOENIX CONTACT 2878722, IB IL RS 232-PRO-PAC
PHNIX CONTACT 2862822, IB IL 24 DO 32/HD-PAC
PHOENIX CONTACT 27 52 00 0, IBS S5 DSC /I-T + 6ES5491-0LB11
Phoenix Contact 2938617, Stromversorgung Quint-PS- 3x400-500VAC
PHOENIX CONTACT 2719470, IBS CT 24 IO GT-T
Phoenix Contact 2938617, Stromversorgung Quint-PS- 3x400-500VAC
PHNIX CONTACT 2862822, IB IL 24 DO 32/HD-PAC
PHOENIX CONTACT 2720304, IBSL BOX 24 DI4/4-M12-D, I/O-Modul
Phoenix Contact 2938727, StromversorgungQuint-PS-3x400-500AC/24D
PHOENIX CONTACT 2720304, IBSL BOX 24 DI4/4-M12-D, I/O-module
Phoenix Contact 2938727, StromversorgungQuint-PS-3x400-500AC/24D
PHOENIX CONTACT 2808323, MCR-RTD/I/NC
PHOENIX CONTACT 2719807, IBSL BOX 24 DIO2/2/4 M12-2A-D
Phoenix Contact, SKBI 64/C64, 2263036
Phoenix Contact, SKBI 64/B64, 2263023
Phoenix Contact, SKBI 64/C64, 2263036
Phoenix Contact MCR-VAC-UI-O-DC, 2811103
PHOENIX CONTACT 2753643, IBS RT 24 DO 16-T
Phoenix Contact, SKBI 64/B64, 2263023
Phoenix Contact MCR-VAC-UI-O-DC, 2811103
PHOENIX CONTACT 2753643, IBS RT 24 DO 16-T
Phoenix Contact, EG45-PS-230AC/24DC/250, 2940618
PHNIX CONTACT 2861467, IB IL AO 2/U/BP-PAC
PHOENIX CONTACT 2753643, / IBSRT24DO16T, I/O-module
PHNIX CONTACT 2861467, IB IL AO 2/U/BP-PAC
Phoenix Contact, EG45-PS-230AC/24DC/250, 2940618
PHNIX CONTACT 2861467, IB IL AO 2/U/BP-PAC
PHOENIX CONTACT 2736039, FLS IB M12 DO 8M12-2A, I/O Gert
PHOENIX CONTACT 2766850, UEGM-OE/AV-24DC/24DC/100
PHOENIX CONTACT 2866284, MINI-PS-12-24DC/24DC/1, DC/DC-Wandler
PHOENIX CONTACT 2814854, MCR-FL-C-UI-2UI-DCI
PHOENIX CONTACT 2736039, FLS IB M12 DO 8M12-2A, I/O device
PHOENIX CONTACT 2766850, UEGM-OE/AV-24DC/24DC/100
PHOENIX CONTACT 2866284, MINI-PS-12-24DC/24DC/1, DC/DC
PHOENIX CONTACT 2891001, / FLSWITCHSFNB5TX
PHOENIX CONTACT 2732004, IB L2 BOX 24 DIO 2/2/4 M12-2A
Phoenix Contact, SKBI 64/C32, 2265034
PHOENIX CONTACT 2736013, FLSIBM12DI8M12
Phoenix Contact, SKBI 64/C32, 2265034
Phoenix Contact, 2754367 IB STME 24 BK-T
Phoenix Contact PSM-ME-RS232/RS232-P, 2744461
Phoenix Contact, SKBI 64/B32, 2265021
Phoenix Psr-scp-24UC/ESA4/2X1/1X2
Phoenix Contact PSM-ME-RS232/RS232-P, 2744461
Phoenix Contact, SKBI 64/B32, 2265021
PHOENIX CONTACT 2808323, MCR-RTD/I/NC
PHOENIX CONTACT 2866750, QUINT-PS/1AC/24DC/5
Phoenix Contact PSM-ME-RS 485/RS485 –P,2744429
Phoenix Psr-scp-24UC/ESA4/2X1/1X2 Safety Relay, PSR-ESA4
Phoenix Contact, MSTB 2,5/7-ST-5,08, 1757093
PHOENIX CONTACT 2808323, MCR-RTD/I/NC
PHOENIX CONTACTQUINT-PS/1AC/24DC/5, 2866750
Phoenix Contact PSM-ME-RS 485/RS485 –P,2744429
Phoenix Contact, MSTB 2,5/7-ST-5,08, 1757093
PHOENIX CONTACT 2720320, IBSL BOX 24 DO4/4 M12-2A-D, I/O-Modul
PHOENIX CONTACT 0424039, AKG 35 BK
PHOENIX CONTACT 2720320, IBSL BOX 24 DO4/4 M12-2A-D
Phoenix Contact Isolation Amplifier, ISO 2-Channel
PHOENIX CONTACT 1669097, SAC-3P-M12MS/1,5-PUR/A-1L-S
PHOENIX CONTACT 2862958, IB IL 24 DI 16-PAC/SN
PHOENIX CONTACT 2806862, IBS PRG CAB
Phoenix Contact, SKBI 64/F48, 2264093
PHOENIX CONTACT 2806862, IBS PRG CAB
Phoenix Contact, SKBI 64/F48, 2264093
PHOENIX CONTACT 2752000, IBS S5 DSC/I-T
Phoenix Contact, SKBI 64/C32, 2265034
PHOENIX CONTACT 2752000, IBS S5 DSC/I-T
Phoenix Contact, SKBI 64/C32, 2265034
PHOENIX CONTACT 2753643, IBS RT 24 DO 16-T
Phoenix Contact, IBSTME 24 DO32/2, 2754370
PHOENIX CONTACT 2753643, IBS RT 24 DO 16-T
Phoenix Contact, IBSTME 24 DO32/2, 2754370
PHOENIX CONTACT 2940171, DEK-REL-24/I/1
PHOENIX CONTACT 2315078, VIP-3/SC/FLK40
PHOENIX CONTACT 2281115, FLKMS-D37 SUB/S
PHOENIX CONTACT 3044102, UT4
Phoenix Contact 2866161, ETD-SL-1T-DTF
PHOENIX CONTACT 2281733, FLKMS-D37 SUB/S
Phoenix Contact 2866161, ETD-SL-1T-DTF
PHOENIX CONTACT 2766850, UEGM-OE/AV-24DC/24DC/100
PHOENIX CONTACT 2281733, FLKMS-D37 SUB/S
PHOENIX CONTACT 0423030, AKG 16 BK
PHOENIX CONTACT 2766850, UEGM-OE/AV-24DC/24DC/100
PHOENIX CONTACT 3004100, UK 5-HESI
PHOENIX CONTACT 2861234, IB IL 24 DI 4-PAC
PHOENIX CONTACT PSR-SCP-24UC/ESA2
PHOENIX CONTACT PSR-SCP-24UC/ESA2
PHOENIX CONTACT MT 2PE-230AC
PHOENIX CONTACT MT 2PE-230AC
PHOENIX CONTACT 2940090, EMG 10-REL/KSR-G 24/21-LC
PHOENIX CONTACT 2940090, EMG 10-REL/KSR-G 24/21-LC AU
PHOENIX CONTACT 1668959, SAC-3P-M12Y/2x0,3-PUR/M12FS B
PHOENIX CONTACT 1668959, SAC-3P-M12Y/2x0,3-PUR/M12FS B
PHOENIX CONTACT 2750154, IBS ST 24 BKM-T
PHOENIX CONTACT 1668959, SAC-3P-M12Y/2x0,3-PUR/M12FS B
PHNIX CONTACT 2750154, IBS ST 24 BKM-T
Phoenix Contact 02016632 0043
PHOENIX CONTACT 2726272, IB IL 24 DO 16
PHOENIX CONTACT 2708245, SUBCON-PLUS-PROFIB/PG/SC2
PHOENIX CONTACT 2726272, IB IL 24 DO 16
PHOENIX CONTACT 2708245, SUBCON-PLUS-PROFIB/PG/SC2
PHOENIX CONTACT 35.75.37.50 / 35.75 / 37.50
PHOENIX CONTACT 1500910, SAC-5P-M12MS/3,0-PUR/M12FS
PHOENIX CONTACT 0423030, AKG 16 BK
PHOENIX CONTACT 1500910, SAC-5P-M12MS/3,0-PUR/M12FS SH
PHOENIX CONTACT 1500910, SAC-5P-M12MS/3,0-PUR/M12FS SH
PHOENIX CONTACT UM 45-D25SUB/S
PHOENIX CONTACT 2761499, SUBCON 9/F-SH
PHOENIX CONTACT Schild für IBS IP I/O-GATEWAY COV
PHOENIX CONTACT 2761499, SUBCON 9/F-SH
PHOENIX CONTACT UM 45-D25SUB/S
PHOENIX CONTACT 2761499, SUBCON 9/F-SH
PHOENIX CONTACT label for IBS IP I/O-GATEWAY COV
Phoenix Contact EMG17-REL/KSR-24/21-21-LC, 2940391
PHOENIX CONTACT 1683413, SAC-3P-M12Y/2XM12FS B PE
Phoenix Contact EMG17-REL/KSR-24/21-21-LC, 2940391
PHOENIX CONTACT 2744380, SUBCON-PLUS-PROFIB/AX/SC
PHOENIX CONTACT 1683413, SAC-3P-M12Y/2XM12FS B PE, Y
PHOENIX CONTACT 2744380, SUBCON-PLUS-PROFIB/AX/SC
Phoenix Contact 2963970, PSR-SPP- 24UC/URM 5X1/2X2
PHOENIX CONTACT 3001501, UK 3 N
PHOENIX CONTACT 1668959, SAC-3P-M12Y/2x0,3-PUR/M12FS B
PHOENIX CONTACT 0424013, AKG 35 BU
PHOENIX CONTACT 1668959, SAC-3P-M12Y/2x0,3-PUR/M12FS B
PHOENIX CONTACT 0424013, AKG 35 BU
Murr, 67950, B07135
Murr, 67950, 35198
PHOENIX CONTACT PLC-BSC-24UC/21-21
Phnix Contact, SD-D/SC/LA/YE, 2963404
PHOENIX CONTACT 3030433, D-ST 6
Phnix Contact, SD-D/SC/LA/YE, 2963404
PHOENIX CONTACT 3030433, D-ST 6, end cover (1PU=10Pcs.)
PHOENIX CONTACT 2947718, EMG 22-REL/KSR-24/21-21
PHOENIX CONTACT 2943738, EMG 45-SD-D/LA/SI
PHOENIX CONTACT 240-107 R.F.I.Filter
PHOENIX CONTACT 2943738, EMG 45-SD-D/LA/SI
Phoenix Contact 2964898, SD-D/SC/LA
PHOENIX CONTACT 2941439, EMG 17-REL/KSR-24/21-21-LC
PHOENIX CONTACT 2708232, SUBCON-PLUS-PROFIB/SC2
PHOENIX CONTACT 2291215, IBS RT P-SMKDSN/1
PHOENIX CONTACT 2291215, IBS RT P-SMKDSN/1
PHOENIX CONTACT 3036178 ST 35
PHOENIX CONTACT 3036178, ST 35
PHOENIX CONTACT 0424013, AKG 35 BU
PILZ 777606, Pnoz X9P 24DC 100-240VACDC
PILZ 774086, PNOZ 11230-240VAC 24VDC
