當(dāng)前中小型PLC比較多，為了適應(yīng)市場的多種需要，今后PLC要向多品種方向發(fā)展，特別是向大型和小型兩個(gè)方向發(fā)展。現(xiàn)已有I/O點(diǎn)數(shù)達(dá)14336點(diǎn)的大型PLC，其使用32位微處理器，多CPU并行工作和大容量存儲(chǔ)器，功能強(qiáng)。

 小型PLC由整體結(jié)構(gòu)向小型模塊化結(jié)構(gòu)發(fā)展，使配置更加靈活，為了市場需要已開發(fā)了各種簡易、經(jīng)濟(jì)的小型微型PLC，*小配置的I/O點(diǎn)數(shù)為8～16點(diǎn)，以適應(yīng)單機(jī)及小型自動(dòng)控制的需要，如三菱公司α系列PLC。

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AEROTECH AWT-200/300 PORTABLE FIBER CONNECTOR INSPECTOR
COLE PARMER 9741-50 MICROSCOPE ILLUMINATOR LIGHTGUIDE
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SPERRY VICKERS PILOT VALVE DG4S4L-018C
MARCONI FORE 4402551 FORERUNNER LE ATM 155MBPS PCI
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MKS 253A-1-40-1 EXHAUST THROTTLE CONTROL VALVE
TEKTRONIX A6303 OSCILLOSCOPE CURRENT PROBE 15MHZ 500A
INTERPHASE 5511-UIO-SAS-MM FDDI PCI ADAPTER 100MBS 5511
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FUJIKURA FSM-30PF FUSION SPLICER CARRYING CASE PADDED M...
PCP PS-19 TWIN PACK POWER SYSTEM RACK MOUNT 1200 WATTS ...
VICOR VI-MA1-CU FLAT PAC POWER SUPPLY
MCDONNELL MILLER 113200 FS1 FLOW SWITCH BOC 9102-0001-0
Olympus MD Plan 10X 0.25 MICROSCOPE OBJECTIVE IC10
VICOR VI-MUO-CQ FLATPAC POWER SUPPLY AC DC SWITCHER
VIZ WP-29A MONITOR ISO-V-AC AC POWER SUPPLY 120 VAC
ADC PAIRGAIN HCS 402-L2 CHASSIS 2X MMG 220 MODULES
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MICRO CONTROLE X PRECISION LINEAR STAGE 4IN ~ NEWPORT
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TYLAN FM-3902V-T MASS FLOW CONTROLLER CL2 MFC CHLORINE
XELTEK 998 XELTEK998 SMD REWORK STATION SOLDERING
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ATRIX OMEGA VAC SUPREME HEPA FILTER OF612HE ACCESSORIES
HP 81624CE STYLE OPTICAL HEAD EXTENSION CABLE 4 METERS
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NEWPORT 430 LINEAR TRANSLATION STAGE W SM-25 MICROMETER
SIMCO AEROSTAT PC IONIZING AIR BLOWER FAN/HEATER
GVG GRASS VALLEY GV-8500 VIDEO DISTRIBUTION VDA 8x 8502
THK KR33A LM GUIDE LINEAR ACTUATOR 150MM ZETA57-83 E57
NEW HP AGILENT 81610CC OPTICAL REFERENCE CABLE
HP AGILENT 85902A BURST CARRIER TRIGGER RF PREAMP FOR 8...
RIFOCS TEMPO FIBERTOOLS 255MT LED SOURCE 1300NM MT-RJ