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可编程序控制器(Programmable Controller)原本应简称PC，为了与个人计算机专称PC相区别，所以可编程序控制器简称定为PLC(Programmable Logic Controller)，但并非说PLC只能控制逻辑信号。PLC是专门针对工业环境应用设计的，自带直观、简单并易于掌握编程语言环境的工业现场控制装置。
PLC的基本组成
PLC基本组成包括中央处理器(CPU)、存储器、输入/输出接口(缩写为I/O，包括输入接口、输出接口、外部设备接口、扩展接口等)、外部设备编程器及电源模块组成，见图1。PLC内部各组成单元之间通过电源总线、控制总线、地址总线和数据总线连接，外部则根据实际控制对象配置相应设备与控制装置构成PLC控制系统。
Digi SCSI 8 Port TERMINAL SERVER 1008
Kongsberg NLC-2B/95
HONEYWELL HICC-1100PT 720P
EST EDWARDS PS6 FIRE ALARM
Eurotherm 2200 PID P/n: 2216e/CC/VH/RH/RC/FH/2XX/ENG/F288
FLUKE 787 ProcessMeter Digital
TELKOOR sPSU-S VLT-30046 : PS-2182-48 P/n: 900-2182-20
MULTI PRODUCTS 811-1C
JASCH PART NO SDAM200210
ABB 07AB61R1 GJV3074361R1
Siemens 6ES7332-7ND02-0AB0 SIMATIC S7-300 SM332
Pepperl + Fuchs AS-Interface VAR-G4F P/n: 199561
HONEYWELL SDO-0824 V1.3 32432220
Thermo Scientific 054998 ProPac SAX-10 LC
NOKIA C109580.A1A FTRB-A
GE Fanuc Versamax Micro PLC IC200UEX626-B6
HONEYWELL 14506914-001
Pleiger Control Module EHS-CM2 Art No 9341100070
Carrier Transicold 12-00418-00SVRP
Phoenix Contact 2320092 QUINT-PS/24DC/24DC/10 DC/DC Converters 1 O/P, 10A, 240W
Phoenix Contact 2866378 QUINT-PS- 24DC/24DC/10
DEIF DU2.1DGU-9 DELOMATIC 4 DISPLAY UNIT Item No: RRMIPOMES 20130031
Allen Bradley 1746-OB32E SLC 500 32-Ch DC 10-32V DC, Protected, A
Omron G9B-12 Stepping Relay Unit, 12-pole AC100V New
BOCK ART NO: 08821 F14 16 HAX/HGX START UNL SET - SU/CR92 230V AC
Schneider Electric BMXP342000 PLC CPU340-20
CUH SDVC31-L Variable
TELEMECANIQUE MAGELIS XBTG4330
ABB Procontic CS31 07KR31 FPR3600227R1202-0 + ECZ
Marvell Semiconductor DB-XCAT-24G4XG-B
Festo Valve Terminal 18210 10P-14-8C-IC-N-U-MLM5L W/ 2 X 161360 + 6 X 162550
NEW Honeywell Pointmobile PM100 2.4
CONTEMPORARY CONTROL SYSTEMS MODHUB-16F
Parker Hannifin SBA Accumulator Safety Blocks SBAR20 E2T1-160-TA1
Druck PTX 610-1-1300
ESI GS4200 General 0-25Bar W/ PM1000 PLUG-IN
Siemens 6ES7133-0BL00-0XB0
Honeywell VBN2FP3POX 2-Way
New Ali Corporation M3328F-B1BG
Consilium 5100080-01A Relay M8
MERU MC1000 SERIES MC1015-US
Electron 275.105-10120
Nortel Networks DCC-3000 5036474 NTV60377
YOKOGAWA DP HARP EJA310A EMS4A-99EN/KU2/N2 4-20 MA 0.13mpa
ROSEMOUNT 3051 CD2A52A1AB4E8M5DF W/DISPLAY
ROSEMOUNT 3051 CD2A33A1AB4E8M5DF W/DISPLAY
Siemens Healthcare MOTOR/ENCODER PHOTO SVC P/n: 716376.502
JRC Starter Control Unit SCU-RN2 18vac
SULZER PCB CARD 112.017.103.200
SULZER PCB CARD 112.017.123.200
SULZER PCB CARD 112.017.134.200
Greystone CMD Carbon Monoxide CMD3B2000
SCHMERSAL P/n: 101135027 TA130-30/03Y
E.DOLD & SOHNE BD9080.12 3AC440V
Thermo Scientific 054993 ProPac WCX-10 LC
Shimaden Series H71, H71-220 Range 0-100MV DC
NOTIFIER HPX-751
Fluke 705 Loop C
METREL TERAOHM 5KV
Fisher-Rosemoun 10P53520006
SCHNEIDER ELECTRIC MODICON TSXP572634M
Cole Parmer Masterflex 77200-62 Easy-Load EASY-LOAD II
Siemens 6GK5216-0BA00-2A3
Honeywell ComfortPoint CP-SPC
Greystone RH200A02AC 2% HUMIDITY/TEMPERTURE
Wyrestorm EX-1UTP-IR-70 70m HDBT
Siemens 6SL3244-0BA20-1A0
J.P. Sauer & Sohn (Genuine) Emergency Kit Part No. 888888
NEW Meraki MR16-HW Dual-Radio 802.11n
Omron Demy Timer DMT-60M Volts: DC24V
TURCK ELEKTRONIK MK33-221-EX0-HL/24VDC
Schneider Electric LV431541 Compact NSX250
Siemens 6SL3224-0BE22-2A0
DEIF Short Circuit and Overcurrent RMC-122D
DEIF Short Circuit Relay Type RMC-111D
HONEYWELL ST3000 STD130-E1H-0000-ZS,S2,MB,SMLPCC.3S
Greystone RH310A02C 2% OSA humidity c/w
Thermo Scientific 054994 ProPac WCX-10 LC
Honeywell ComfortPoint CP-DIO
New MTL-4842 HART INTERFACE
ETA Chips Co ADAM24P16SG
IDEC Izbarl Safe Relay IBSF601DR
HONEYWELL BURNER CONTROL S7800A1001
MATSUSHITA PANASONIC NAIS FP1-C16 PLC 8OUTPUT AFP12112B
ROSEMOUNT 3051 CD2A22A1BB4I1L4 TRANSMITTER 3636PSI/250 BAR 4-20MA
Omron E5CS-RGU-W Multi Range AC100-240
Honeywell H7012B1023 Room 3% Humidity Transmitter (0-10V) With NTC20K
HID ICLASS CLAMSHELL CARD 2080PMSMV
Festo CPX-M-16DE-D 550202
Qualys QualysGuard QGSA-3120-A1
Entrelec Schiele ANALOG INPUT MODULE PMAI 2.423.435.00
JASCH PART NO SFC200210
Knick P15038 F1 DC
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