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随着微处理器的应用，使PLC的运行速度增快，使它更符合处理高速度复杂的控制任务，它与微型计算机之间的差别不是很明显。
8、总价格低
PLC的重量、体积、功耗和硬件价格一直在降低，虽然软件价格占的比重有所增加，但是各厂商为了竞争也相应地降低了价格。另外，采用PLC还可以大大缩短设计、编程和投产周期，使总价格进一步降低。
PLC系统与工业总线计算机和DCS系统相互渗透，互为借鉴，相互竞争而发展。促进了工业的进步。
PLC产品面临现场总线的发展，将再次革新，满足工业与民用控制的更高需要。
三、PLC的通信及联网
TEKTRONIX TDS520 TDS 520 DIGITAL OSCILLOSCOPE 500MHZ
Tektronix 2465B 400MHz 4 Channel Analog Oscilloscope
One-day shipping available
TEKTRONIX P3420 NSFP P3420
Tektronix TDS1012B 2 Ch Digital Storage Oscilloscope
Tektronix gigaBERT 1400 GENERATOR GB1400 Desktop Refurb
Tektronix P6248 1.5GHz Differential Probe Tested
Tektronix AFG3021 Function Generator
Tektronix 495P Spectrum Analyzer 0-1.8 GHz Tested OK!
Tektronix VX4356 DPDT RELAY SWITCHING NEW Old Stock
Tektronix VM700/1 Video Measurement Set, NTSC
calibrated with 14 day ROR
Tektronix SD-46 Optical to Electrical Converter 20 GHz
Tektronix DL-11 Delay Line (Reduced!)
Tektronix TDS520A Digital Oscilloscope w/ opt
Tektronix 495P Tek Spectrum Analyzer *Read Notes* Wrks
Sony Tektronix AFG310 Arbitrary Function Generator New
Includes Software and Manuals New In Box
TEKTRONIX TLS216 / TLS 216 OSCILLOSCOPE
Tektronix TLA7AA4 DS 8Mb 136Ch Logic Analyzer Module
One-day shipping available
TEKTRONIX 7854 OSCILLOSCOPE w/ Opt 2D + AMP + TIME BASE
4 Slot Module w/ Dual Trace 7A24 + 7A18 + 7B80 + 7B85
Tektronix TDS2014 Oscilloscope w/4 ea. NEW P2220 Probe
JUST CALIBRATED by TEKTRONIX on Mar-2011, CAL DUE 2012
Tektronix TekScope THS730A 200MHz Oscilloscope THS730
@CALIBRATED@SALE@200 MHz Scope/ DMM 1GS/s@90D Warranty@
Tektronix 2465A DM 350 MHz scope, NIST-certified
additional free NIST recalibration within one year
TEKTRONIX TDS340 DIGITAL OSCILLOSCOPE
Tektronix TDS 340A TDS340A digital scope, NISTcertified
additional free NIST recalibration within one year
TEKTRONIX SD-46 20 GHZ HEAD CSA803C 11801C ELECTRICAL
Tektronix 2465 DMS 300MHz analog oscilloscope
Tektronix WFM300A-10 Composite/Component Waveform Monit
Tektronix TSG-170A NTSC Television Generator
Tektronix P7240 4Ghz Probe ACCESSORIES #15 Tested
Tektronix P7240 4Ghz Probe Tested
Tektronix 1503C Metalic TDR Cable Tester & YT-1 Printer
TEKTRONIX ASG 140, AUDIO SIGNAL GENERATOR
Tektronix P6248 1.5GHz Differential Probe Tested
Tektronix 11402 Digitizing Oscilloscope
Tektronix 11801C Digital Sampling Oscilloscope
Tektronic 11801C Digital Oscilloscope SD-22, SD-20 ***
TEKTRONIX OA5002 OPTICAL ATTENUATOR OA-5002
Tektronix TSG-271 PAL Television Generator TV Rack
Expedited shipping available
TEKTRONIX 2221 USPP 2221
Tektronix 601A SDI Waveform Monitor
Tektronix SD46 DC-20GHz Optical - Electrical Converter
Calibrated, 30-day warranty/14-day right of return
TEKTRONIX TCP312 100 MHZ 30A DC CURRENT PROBE TCPA300
TEKTRONIX DG2020 DG 2020 DATA GENERATOR + MANUAL