A20B-0006-0700;
供应A20B-0006-0700;
A20B-0006-0700;
PLC与单片机有哪些区别?
PLC是应用单片机构成的比较成熟的控制系统，是已经调试成熟稳定的单片机应用系统的产品，有较强的通用性。
单片机可以构成各种各样的应用系统，使用范围更广，但单就“单片机”而言，它只是一种集成电路，还必须与其它元器件及软件构成系统才能应用。
从工程的使用来看，对单项工程或重复数极少的项目，采用PLC快捷方便，*率高，可靠性好，但成本较高。
对于量大的配套项目，采用单片机系统具有成本低、效益高的优点，但这要有相当的研发力量和行业经验才能使系统稳定。
结:从本质上说，PLC其实就是一套已经做好的单片机(单片机范围很广泛)系统。
单片机可以取代PLC吗?
有人说这是个伪问题，单片机是元器件，PLC是由元器件以及庞大的软件构成的系统，两者在这一方面没有可比性 —— 大多PLC的控制芯片实际上就是单片机，也就是说可以将PLC看成是单片机的二次开发。单论工业防护等级，单片机的稳定性和可靠性能根本比不了PLC这种IP67类的产品( IP为标记字母，标记数字表示接触保护和外来物保护等级，第二标记数字表示防水保护等级)。而且就PLC这种能应对工业恶劣环境的产品还开发出一套冗余系统。
DELCO ELECTRIC MOTOR 30HP 1170 RPM, DOUBLE C FACE & SHAFT 326TYZ ODP 230-460VBeloit Barracuda Model 313C3 pulper gear driveCH Cutler Hammer HJD3250 250 Amp Circuit Breaker
Craneveyor Corp.(800627C-6) 2 Ton, 17 Foot Overhead Crane,ANDO AQ4321D TUNABLE LASER SOURCE
Anritsu/Wiltron SC6230 50 GHz RF Power SensorCUTLER-HAMMER 7600COUT OF A
ANDO/Yokogawa OTDR AQ7275 SM OTDR with AQ735032 Module,6 dB
Cutler Hammer NH361200 Amp Breaker
C97046 HP Agilent E4406A VSA Transmitter Tester (7MHz-4.0GHz) w/ Opt 202 BAHCoherix 3DX 800-0025-325 Rev A vision inspection system measures 3D
APEX 3513 RFgenerator Power supply A3M3K000EA120B001A, S9530CALIBRATED Dual Port Testing SONET 10GigE 90D
Cutler-Hammer P3BHMDL3800N Pow-R-Way III Busway Circuit Breaker Enclosure
BELL MARK EY3201-ROHS USPP EY3201ROHS
Boltswitch 2000 AMP (VL3610) RefurbishedCincinnati 1FT5044-0AC01-0-Z Servo Motor- Crouse-Hinds KAM-LOK 1200Amp 480Volt Bolted Pressure Contact Switch w/Shunt Trip
Carlen Controls CC290T-3600-AB-12-MM-MS Encoder Motor WOWCOMPUMOTOR 606-MO-NC-M-C USPP 606MONCMC
AMAT 0190-00398 ASTeX ARX-X491-P 3Kw Microwe control module ARX-X491AMAT 0010-30418 ASSY HEATER 8" NHT .029 WXZ
ALLEN BRADLEY PANELVIEW 1400 2711-T14C20 2711T14C20 2711-T14C20X ETHERNET
Control Techniques Mentor Variable Speed DC Drive 10HP/7.5KW 25AMP 6M7.5 104763
DATATAPE AN-USH 34 (V)Barber Colman 2404 2404#64399 2404/CC/VH/TH/XX/XX
CALIBRATED ADSL1/2/2+ Ping FTP TraceRoute90D Wrnty ALLEN BRADLEY SERVO MOTOR 1326AB-C3E-11
Anritsu MP1550A
CONTROL TECHNIQUES CDE1100S USPP CDE1100S
Control Techniques SP4201 | 12mo | Free EUping | Inc UK VATCOGNEX DATAMAN BARCODE THREEAnritsu MP1763C and MP1764C for 12.5G w 01
Controlled Power Company Uninterruptible Power System ( UPS )Anritsu ME3620A-ME0301A- ME0315D-ME0314B SDH/Sonet Analyzer Transmitter w/ 2.5 J
Anritsu MS9701B with MS9030A Optical Spectrum AnalyzerControl Techniques M701-044-00150 | Free EUping | Inc VAT
Carlson Precision CPT200 Spring Tester w. 2 Sets of Weights Great Deal
BANNER MGR4216A LIGHT CURTAIN EMITTER
COMPUTER CONVERSION PLS1000 NSPP PLS1000Control Techniques SP3402 | 12mo | Free EUping | Inc UK VAT
BARBER COLMAN 80DA-00001-002-0-00 USPP 80DA00001002000ALLEN BRADLEY ULTRA 3000I DRIVE 2098-DSD-HV030X-DN
B106/B10/B13/B31/K42/K49/K12: 1 W/R&S CAL
Allen Bradley Size 5 Contactor 500-FOB930 480V Coil
ALLEN BRADLEY PANELVIEW 1400E 2711E-T14C15 SER E REV B Operator Interface Panel
BOSCH DIGITAL DRIVE CONTROLLER SERVODYN DM 008K 1101-D
Allen-bradley 5250-LP4
Atlas Copco QMX90-70RT Nutrunner ~` `~
ALLEN BRADLEY SERVO CONTROLLER 8520-SER5/ACutler Hammer SPD160480Y3C Surge ProtectorALLEN BRADLEY POWERFLEX 700 AC DRIVE 20B D 027 A 0 AYNANA0 20BD027A0AYNANA0
DATA TRANSIT Finisar BUS DOCTOR RX-108P-S-L w/ DR-SATA-1500SCom Power PC-114 EMI / EMC Radiated Emissions Test SystemBK Precision 8524 5000W Programmable DC Electronic Load, 0.1 - 60V
Anritsu 37369A Network AnalyzerANRITSU MP1580A 2.5/10G W/MU150018A JITTER UNIT OPT 002
Berkeley Process ControlAMP 4-axis (Tested functional)Allen-Bradley 1747-L552 SLC 500 Processor Unit
DENEX 51L2010 NSFP 51L2010Barber Colman Operator Interface 41AA-2 #38439
BOSCH REXROTH INDRAMAT V20.2CA-64B-33C-D-FW OPERATOR INTERFACE
Calibrated Agilent HP N9923A/106/122 Handheld 6GHz Network Analyzer CertiPrime
Avtron K711A 500 kW Resistive Load BankAviation Starter Generator Alternator Test stand
ALLEN BRADLEY PV PLUS 1250 2711P-T12C15A2 2711PT12C15A2 NIBBOSCH 1070075887-204 NSPP 1070075887204
ALLEN BRADLEY DRIVE 25 HP 575 V 1336SC025ANFR 1336S-C025-AN-FR ( S/S ENCLOSURE)
C72291 VICKERS MONITORS CRT REMANUFACTURED
BAILEY SYMPHONY NETWORK P-HC-DOC-00010000
DAYTRONIC 10BDR64/006 H/W 4.1 INTERFACE CARD 10BDR64
Allen-Bradley 1394-SJT05-T AC DRIVE
Ando AQ8423ZCUTLER-HAMMER MOLDED CASE SWITCH 1200A 600V NDK ND312WK
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