PLC作為新一代的工業(yè)控制器，由于具有通用性好、實用性強、硬件配套齊全、編程簡單易學等優(yōu)點，因而廣泛應用于電力、機械、紡織、電子、交通運輸、石油化工等行業(yè)的自動控制系統(tǒng)中。PLC是專門為工業(yè)控制設計的，在設計和制造過程中采取了多層次的抗干擾措施，使系統(tǒng)能在惡劣的工業(yè)環(huán)境下與強電設備一起工作，運行的穩(wěn)定性和可靠性很高。PLC整機的平均無故障時間可達幾十萬小時。
PLC作為新一代的工業(yè)控制器，由于具有通用性好、實用性強、硬件配套齊全、編程簡單易學等優(yōu)點，因而廣泛應用于電力、機械、紡織、電子、交通運輸、石油化工等行業(yè)的自動控制系統(tǒng)中。PLC是專門為工業(yè)控制設計的，在設計和制造過程中采取了多層次的抗干擾措施，使系統(tǒng)能在惡劣的工業(yè)環(huán)境下與強電設備一起工作，運行的穩(wěn)定性和可靠性很高。PLC整機的平均無故障時間可達幾十萬小時。
隨著相關(guān)技術(shù)的發(fā)展，PLC的功能也越來越強，使用越來越方便。但是，整機的可靠性高只是保證系統(tǒng)可靠工作的前提，在設計和安裝PLC系統(tǒng)的過程中還要采取相應的措施，才能保證系統(tǒng)可靠工作。如果PLC的工作環(huán)境過于惡劣，如溫度過高、濕度過大、振動和沖擊過強，以及電磁干擾嚴重或安裝使用不當?shù)?，都會直接影響PLC的正常、安全和可靠運行。如果外圍電路的抗干擾措施不當，整個控制系統(tǒng)的可靠性就大大降低。因此，在系統(tǒng)設計時應予以充分的考慮，在硬件上進行適當?shù)呐渲茫⑤o以相應的軟件，以實現(xiàn)系統(tǒng)故障的防范。PLC控制系統(tǒng)的可靠性直接影響到企業(yè)的安全生產(chǎn)和經(jīng)濟運行，系統(tǒng)的抗干擾能力是整個系統(tǒng)可靠運行的關(guān)鍵。因此，分析研究PLC應用中的可靠性和抗干擾技術(shù)是十分必要的。要提高PLC控制系統(tǒng)的可靠性，既要在硬件上采取措施，又要在軟件上設計相應的保護程序。
A6055A HP 9000 J6700 HP-UX Unix Workstation 11i 11.00
HP 9000 712 Workstation A4023A A4024A A2615A HP-UX
HP RX2600 Itanium Server A6873A A6873B HP-UX 11i v3 v2
HP Integrity RX7640 Server AB312A AD064A AB447A AD242A
HP A3288B e3000 979KS 400 server, MPE MPE/iX 3000
HP A3768A e3000 939KS/020 server, MPE MPE/iX 3000
HP A3460A e3000 969KS 420 server, MPE MPE/iX 3000
HP e3000 N4000 A6103C MPE/iX Server N4000-200-380 A7105
HP 9000 J5600 workstation server A5991A HP-UX 10.20 OS
HP e3000 N4000 A6914C A7016A MPE/iX MPE Server
HP 9000 RP4440 Server A7134B HP-UX 11i v3 v2
HP 9000 RP8400 A6093A HP-UX Unix Server PA-RISC 11i v3
HP 9000 RP8400 A6093A HP-UX Server 11i v3 128GB memory
HP AB453A 2GB memory kit - RP7440 RP8440 rx7640 rx8640
HP 9000 RP5450 A5191A HP-UX Server L2000 L1000 L1500
HP A2880A A2880-60206 PS/2 Japanese Japan keyboard
HP 9000 H60 A2981A A2984A I60 A2982A A2985A G60 A2980A
HP 9000 H50 Server HP-UX A2439A I50 A2363A G50 A2436A
HP 9000 H40 Server HP-UX A2435A I40 A2438A G40 A2364A
HP 9000 H30 Server HP-UX A2437A I30 A2365A G30 A2434A
HP 9000 C3600 Workstation A5992A HP-UX 10.20 11.00 11i
HP 2G SE Disk A4322A A2556A A4274A A4213A A4118A A4272A
A7109A HP Core I/O board - RP8400 RP8420 RX8620 Servers
HP Z7224A Z7224-60001 V.35 Converter panel
HP 9000 B132L Workstation A4190A A4165A HP-UX 10.20 FWD
HP 3000 A1027A 922LX Server 922RX A1046A
HP A3311A HP Disk Array
C2703A C2703B C2701A C3225A HP 700RX 9000 HP-UX Unix
HP 9000 A3639A N4000 HP-UX Enterprise Server Unix
HP 9000 D270 Server HP-UX Unix A3473A A3558A
HP 9000 C110 HP-UX A4200A A4203A A4200D A4203D
HP 9000 A3639B N4000 HP-UX Enterprise Server Unix
HP 9000 B180L Workstation A4323A A1266A HP-UX 10.20
HP 9000 B180L Controller A4323A A1266A HP-UX 10.20 EISA
HP A6490A Surestore Disk System 2300 DS2300
A1946A HP 9000 730 Apollo Workstation HP-UX 9.05
HP AB455A 8GB memory kit - RP7440 RP8440 rx7640 rx8640
HP 9000 RP7410 A6752A HP-UX pa-risc w/ 11i v3 B.11.31
HP 9000 A3639B N4000 HP-UX Enterprise Server Unix
HP 9000 RP5470 A6144B HP-UX Server 750MHz A6840A RP5430
HP 9000 RP5470 A6144B HP-UX Server 750MHz 16GB memory
HP 9000 Superdome Server A5201A A5200A A5202A A6113A
HP 9000 712 Workstation A4345A A4346A A2615A HP-UX
A4093A HP 9000 715/80 Workstation A4108A HP-UX A2084A
A4262A HP VME GSC Expansion HP-UX A4219A A4500-66008
HP 9000 748L Workstation A4510A A4513A A4511A VME HP-UX
HP 8GB Memory kit A7131A A9775A A6835A AB228A A6970A
HP CRX-48z Graphics A2091A 9000 735 755 workstation
HP CRX-48z Graphics A2091A 9000 715 725 workstation
HP A3832A memory 997 A3600A A3605A A3606A A3607A A3608A
HP 9000 5 core 747i Workstation A2639B A2639A A2261Y
HP A3214A e3000 969KS Server MPEiX A3211A A3212A A3213A
HP ZX6000 900MHz CPU A6957A A7231A A7231-62039
C2730A HP 9000 Envizex HP-UX Unix C3253A C2731A C2732A
HP 9000 RP3440 HP-UX Server A7137A AB354A 32GB memory
HP 9000 RP3440 HP-UX Server A9952A AB534A 11i
HP 9000 RP4440 Server A7134B HP-UX 11i v3 v2 128GB mem
HP 9000 B2600 A6070A power supply 0950-4052 DPS-320-FBA
HP 9133L Disk with Tape Drive HP-IB
HP 9133XV Disk with Tape Drive HP-IB
HP 9000 RP8440 Server A9958A AD110A AD031A AD032A
HP 7937H 571MB HP-IB Eagle Drive 7937 7937XP
HP 3000 925 Server, MPE/iX 925LX A1006X A1007A A1032A
HP 3000 935 Server, MPE/iX A1060A A1061A A1061X
HP 3000 MicroXE Server, MPE/iX 3000XE 32545A
HP 3000 System 42 Server, MPE/iX 32545A 2624B
HP Envizex NetStation C5207A C5207B C5209A C5200-60031
HP Series 1000 Server - 2484B 2484A 2434A
HP Envizex NetStation C5200-26508 C5200-66508 riser bd
HP A6098A AB308A 4GB Memory 9000 RP8400 RP7410 RP7405
HP power 0950-3336 0950-2624 A4309-87950 A4309-87960
HP Envizex NetStation memory C5218A 1818-6573
HP Envizex NetStation 16MB memory C5219A 1818-6572
HP Envizex NetStation 32MB memory C5220A A3833-60001
HP A7207A 73GB drive B2600 J6750 C3750 workstation
HP 9000 744/132L VME A4500A A4520A A4500-60001
HP e3000 947RX MPE/iX Server A1708A A2420A A1752A 947SX
HP 9000 D370 Server HP-UX Unix A3560A A3562A
HP 9000 D380 Server HP-UX Unix A3577A A3579A
HP 9000 712 Workstation A4027A A4028A A2615A HP-UX
HP 9000 712 100 Workstation
HP 9000 C240 Workstation A4945A A4946A HP-UX 11i 10.20
HP 9000 C200 Workstation A4318A A4319A HP-UX 11i 10.20
A2551A HP 9000 755 Workstation, HP-UX A4100A A2650A
147GB Disk, SC10 HVD10 L2000 RP5450 A6091A A5622A HP
180GB Disk HP 9000 K580 K570 K460 K380 A4909A A5529A
2932A HP Line Impact Desk-top printer 9000 2934A 2933A
A4265A HP 32MB Memory Module - 743i 748i 743rt
A4268A GSC FWD SCSI-2 Host Adapter, 743i 744L 745 748i
C3230A HP 9000 Entria HP-UX Unix C3232A C3264A C3262A
HP 7980XC 6250/1600 CPI BPI Tape Drive 7980A
HP 9000 742rt A2260A VME Real Time Board Computer 742i
A4262A HP 743i VME GSC Expansion HP-UX Unix
HP 9000 K580 Server A4837A K380 A4869B HP-UX 10.20 11i
EMC Symmetrix 8430 Connectrix Disk array 100-840-350
A2627A HP 9000 715/50 Workstation HP-UX A2625A A2084A
ST36331X 36GB HP 9000 D350 D320 D310 A3312A A3311A
HP A3832A memory 997 A3600A A3605A A3606A A3607A A3608A
ST36331X 36GB Disk HP 9000 D390 D380 D370 D360 D330
18GB SE Seagate disk drive HP 9000 A5545A A5560A A5789A
HP C1150G 80fx SureStore Optical Jukebox C1150F C1150H
HP 9000 L2000 A5191A HP-UX Unix Server PA-RISC 440MHz
HP 9000 L3000 A6144A HP-UX Unix Server PA-RISC
HP C200 controller Agilent 3070 E4005C circuit tester
HP C110 controller Agilent 3070 E4005C circuit tester
HP 9000 RP2405 A7121A HP-UX Unix Server PA8700
HP 9000 RP5405 A7117A HP-UX Unix Server PA-RISC
HP 9000 RP5405 A7118A HP-UX Unix Server PA-RISC
HP Integrity RX8640 Server AB297A AB443A AB444A AB446A
HP 9000 748L Workstation A4510A A4513A A4511A VME HP-UX
HP CX2620 Itanium Integrity Srver AD198A Linux Ericsson
HP ZX6000 Itanium Workstation Server HP-UX RAID 5 11i
HP ZX6000 Itanium Workstation A7857A A9372A HP-UX 11i
HP ZX6000 Itanium Workstation A7857A A9372A HP-UX 11i
HP 9000 RP3440 HP-UX Server A7137A AB354A 11i
HP 9000 748/165L Workstation A4513A A4511A HP VME Unix
HP 9000 RP5470 A6144B HP-UX Server 750MHz A6840A RP5430
HP Integrity rx2620 Itanium2 Server w 24GB Memory
HP 9000 RP5470 A6144B HP-UX Server 750MHz 16GB memory
HP 9000 RP2450 A500 A5570B HP-UX Unix Server 8GB Memory
HP 9000 RP8420 A6912A HP-UX Unix Server PA-RISC
HP StorageWorks Disk System DS2405 2405 A6250A A6255A
HP 9000 RP2470 A6890A HP-UX Unix Server PA8700 A6892A
HP J2794A HP-UX High speed PSI EISA X.25 board
HP 9000 C3650 Workstation A7814A A7817A HP-UX 11.i UNIX
HP 9000 C3750 Workstation A9636A A9637A HP-UX 11i HP-UX
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HP 9000 RP3440 HP-UX Server A9952A AB535A 11i
HP 9000 725/50 Workstation A2685A A4092A A2897A HP-UX
HP J3593A J2485A 64 port MUX Kit for HP 9000 Servers
A6070A HP 9000 B2600 Workstation parts removal book
HP A3045A e3000 987SX Server MPE A3004A A2317A A2317B
HP A5583A Surestore DLT8000 Tape Library A5585A A6311A
HP A3672A e3000 989KS 200 Server MPE/iX
HP A5141A e3000 989KS 650 Server MPE/iX A5142A A5141B
HP A3116AW e3000 918LX Server A3096AW A3117AW MPE /iX
HP 9000 735/125 A4053A HP-UX Workstation 10.20 9.05
HP 9000 744/165L VME A4511A A4512A A4500-60016 opt 120
HP 9000 748i Workstation A4311A A4310A A4260A VME HP-UX
HP A3460A e3000 969KS 420 server, MPE MPE/iX 3000
HP 9000 A4014A A2263-66536 LAN AUI Card HP-UX
HP e3000 N4000 A6450B MPE/iX Server N4000-100-330
20. HP 700/94 Terminal C1002A C1002G C1002W C1002-63101
Danford 9021-38 4 port EISA MUX for HP HP-UX 9000 boxes
RJ45 DB9F Modular Adapter 1100195-10
HP A5146A e3000 989KS 650 Server MPE/iX A5141A
HP 9000 RP7420 A7025A HP-UX Unix Server PA-RISC 11i
HP 9000 K580 Server A4837A K380 A4869B HP-UX 10.20 11i
ST180331X 180GB Disk HP 9000 D390 D380 D370 D360 D330
HP A6684A HBA SAN HSC Tachlite Fiber 9000 HP-UX
HP A6749A J2485A 64 port MUX Kit for HP 9000 Servers
HP A6749A J2484A 64 port MUX Kit for HP 9000 Servers
HP A6829A Ultra160 LVD SCSI adapter board A6829-60101
SBE VCOM-34 Serial Communications Board 9017-77 VME
PU512V1 RTA board 3BSE004736R1 EISA HP ABB
HP A3732A 1GB V2600 V2500 V2250 9000 HPUX
A6474A HP blade server bh7800 w/ A6743A HP bc1100 blade
HP A3519A Graphics, UNIX MPE 9000 K580 K460 979KS 989KS
HP A4071B Graphics, UNIX 715 C360 C110 B180L J280 C180
HP e3000 N4000 A7014C MPE/iX Server N4000-300-750
HP A2990A HSC Expansion, 9000 K460 K450 K420 K410 K400
HP A3186A A3696A HSC Expansion 9000 K580 K380 K570 K370
HP A3694A HSC Expansion 9000 K580 K380 K570 K370 989KS
HP 9000 R390 Server A5179A HP-UX 10.20 A5178A D390
HP A5597B Surestore Ultrium Tape Library 20/700 A5597A
HP 9000 A400 RP2400 Server A6190B HP-UX Unix 11i
HP A4244A CRX Graphics, UNIX C360 C240 C110 C180 C200
HP J3401A Telecom Signaling Unit TSU Opencall SS7
A2613A HP 9000 715/33 Workstation HP-UX A2084A
HP A6115A 2GB Memory 9000 L2000 RP5470 RP5450 L1000
A4340A HP 9000 715/100XC Workstation HP-UX A2084A
HP C6379A HP DLT8000 Tape Drive 4 C4318SZ C4318B C6378A
EMC 100-845-224 73GB disk for Symmetrix 8430 Connectrix
EMC 100-845-209 73GB disk for Symmetrix 8430 Connectrix
EMC 100-845-222 73GB disk for Symmetrix 8430 Connectrix
EMC 100-845-181 36GB disk for Symmetrix 8430 Connectrix
EMC DS-16m Fibre channel switch Connectrix 118-031-901
EMC ED-64m Fibre channel McData Connectrix 100-620-010
HP StorageWorks director 2/64 A6534A A6534B
A6795A HP 2Gbps Tachyon XL2 PCI Fiber Channel adapter
HP A7683A 60-amp power distribution unit (PDU)
HP A5236A HP SureStore E Disk System FC10 HP-UX
HP 9000 L2000 A5191A HP-UX Unix Server PA-RISC 440MHz
HP 9000 RP5470 A6144B HP-UX Server 875MHz A6840A RP5430
HP A5814A SCSI Fibre Channel Fabric Router
HP Integrity RX8640 Server AB297A AB443A AB444A AB446A
HP 9000 H70 A2979A A2973A I70 A2362A A2972A G70 A2970A
HP A3676A e3000 989KS 600 Server MPE/iX
HP ZX6000 Itanium Workstation
A9918A Core I/O board for RP7420 & RX7620 A9918-60001
HP 9000 RP5470 A6144B HP-UX Server A6805B 750MHz A6115A
HP 9000 A3639C RP7400 HP-UX Enterprise Server Unix
HP A6218A Virtual Array VA7110 VA7410 A6267A A6268A
RDI Precisionbook Tadpole Laptop 9000 Unix HP-UX HP
HP A2246A 4 slot DIO, for 362 controllers A2240C A2240B
HP 9000 C360 Workstation A4988A HP-UX 11i 10.20 unix
A6094A HP Processor / memory cell board rp8400 rp7405
HP C5200A C5201A C5202A C5203A Envizex II 0950-2995
HP A6265A VA7400 Virtual Array 7400 A6189A A6187A
HP A4974A PCI Ultra SCSI single-ended adapter - B2600
HP 0950-4294 DC-DC Power Converter Processor Power Pod
HP A6748A 8-port MUX Multiple card A6748-60001 HP-UX
HP 9GB disk A5006A A5795A A5806A A4912A A3628A A5544A
HP J3592A 8-port MUX Multiple card J3592-60101 HP-UX
A9784A 2Gb Fibre Channel Gigabit Ethernet adapter up-ux
HP A5082A 2GB V2600 V2500 V2250 A3732A 9000 HPUX A5085A
HP A9897A A8706A A7529A 73GB U320 15k disk 0950-4381
HP A9896A A6948A 36GB U320 15k disk 5065-5286 hp-ux
HP 9000 D390 Server HP-UX Unix A4904A A4903A
HP A7285A A6804A 73GB U320 10k disk drive 0950-4113
20. HP 700/96 Terminal C1064A C1064G C1064W C1064-63004
HP A6194A 73GB 10k VA7410 VA7400 VA7110 VA7410 DS2405
HP A5595A 36GB Disk, A6742A A6737A A5294A HP-UX RP5470
ST180331X 180GB HP 9000 D350 D320 D310 A3312A A3311A
Integrity rx3660 Itanium Server AB463A AB596A AB577A
ABB Advant Station 520i RTA Real-Time Accelerator hp-ux
A4265A HP 32MB Memory Module 743i 748i 743rt VME 9000
A4268A GSC FWD SCSI Host Adapter 743i 744L 745 748i VME
SBE VCOM-34 Serial Communications Board 9017-77 VME
HP 650MHz A6687A A6687AX A6687-64001 A6687-69001 RP7400
HP J2062A DTC16iX DTC 16iX Unix HP-UX 9000 mpe e3000
GE Fanuc Radstone PMC ATMF-2BA-100 ATM Network Card VME
HP 550MHz A5866A A5866AX A5866-64001 A5866-69001 N4000
HP A5277A FC60 array A5278A A5277-69009 A5277-60006
HP 440MHz A5500A A5500-04001 A5500-04004 A5500-04005
HP 2GB disk drive A4213A A1658-60009 A1658-69009 A4118A
HP ZX6000 Itanium ia64 CentOS Linux Enterprise ubuntu
Barco Barcoview IVS 4600 VME Graphics HP 9000 748i 743i
300GB Disk, SC10 HVD10 L2000 RP5450 A6091A A5622A HP
ABB Advant keyboard IH522EN 3BSE018792R1 PU518 PU519
HP 9000 D280 Server HP-UX Unix A3573A A3575A
HP AB313A cell board Itanium rx8640 rx7640 SX2000
HP J2159A EISA X.25 V.35 WAN HP-UX Apollo LAN Adapter
HP A5132A 9GB Disk Drive for A3550A A3549A arrays
HP A3396A 4GB Disk Drive for A3550A A3549A arrays
HP 9000 745L VME Controller A4964A A1255A A4520A A4512A
J3420A J3420B ATM Adapter VME GSC 743i 744L 745 748i
HP ZX6000 Itanium Workstation A7857A A9372A HP-UX 11i
HP-UX 11i v2 11.23 or v3 11.31 loaded
SANYO STNM-DR-063B NUTRUNNER DRIVER
ABB FLEXIBLE 3-553-0496G BOARD 2 pcs
FANUC A03B-0807-C159 MODULE 10 pcs
ABB DSQC 223 I/O BOARD
FANUC A16B-2200-0250/05C PCB 4 AXES CONTROL (R-H) 10 pcs
FANUC A16B-1211-0860/05A PCB 5 pcs
FANUC A20B-0008-0871 BOARD 1 pcs
FANUC A16B-1210-0270/02A RAM BOARD 5 pcs
FANUC A20B-0007-0007/08B BOARD 5 pcs
FANUC A16B-1210-0220/08B PCB 1 pcs
FANUC A16B-1200-0150/02A ROM CARD
RELIANCE ELECTRIC 57403-G DIGITAL OUTPUT MODULE NIB
GE FANUC IC600CB52K ARITH CONTROL
GE FANUC IC600CB515N EXPII LOGIC CONTROL APPEARS NEW
RELIANCE ELECTRIC ES281CMB AUTOMAX DCS POWER SUPPLY
RELIANCE ELECTRIC 57411-2E RESOLVER INPUT MODULE NIB
