进入90年代以后，由于计算机网络技术的迅猛发展，使得DCS系统得到进一步发展，提高了系统的可靠性和可维护性，在今天的工业控制领域DCS仍然占据着主导地位，但是DCS不具备开放性，布线复杂，费用较高，不同厂家产品的集成存在很大困难。
从八十年代后期开始，由于大规模集成电路的发展，许多传感器、执行机构、驱动装置等现场设备智能化，人们便开始寻求用一根通信电缆将具有统一的通信协议通信接口的现场设备连接起来，在设备层传递的不再是I/O（4～20mA/24VDC）信号，而是数字信号，这就是现场总线。由于它解决了网络控制系统的自身可靠性和开放性问题，现场总线技术逐渐成为了计算机控制系统的发展趋势。从那时起，一些发达的工业国家和跨国工业公司都纷纷推出自己的现场总线标准和相关产品，形成了群雄逐鹿之势。
Staco Automatic Voltage Regulator 480V 500A With Maint Bypass
Staco Energy 5010CT-3Y Variable Transformer 24.2KVA Input 240 output (0-280V)
STACO SVR-21WBSN005 USPP SVR21WBSN005
STAEFA NRUF / A RS04 - CONTROL SYSTEM
STAEFA CONTROL SYS 545-793 USPP 545793
STAEFA CONTROL SYS 549-407 NSPP 549407
STAEFA CONTROL SYS RDK9 NSFP RDK9
STAEFA CONTROL SYS RDK992G NSFP RDK992G
STAEFA CONTROL SYS REG9 NSFP REG9
STAEFA CONTROL SYS WSU1 NSPP WSU1
STAEFA CONTROL SYSTEMS NRUF SWISS MADE
Staffa Screw Motor off 700 Ton 80 oz Van Dorn #26357
STAGEMAKER LIFTKET VERLINDE CYBERHOIST DEMAG TOURRIG
STAHL 8210/1-5-4-172/10 USPP
STAINLESS KNIFE VALVE SURPLUS DEZURIK #2048916
Stainless NEMA 12 Electrical Enclosure Control Cabinet 72x22x90 Keyboard Monitor
Stainless Steel Cabinet with Honeywell Chart Recorders
Stainless Steel Control Cabinet with IDEC PLC System- Opennet with HMI Screen
Stainless Steel Electrical Enclosure /
Stainless Steel Glove
Stainless Steel Lab Vacuum Inert Gas Glove Airlock
STANDERD ACC INCLUDED, BATTERY/CAL KIT/CABLE
Stanford Research DG535
Stanford Research DG535 4 Channel Digital Delay/Pulse Generator Options 01,02,03
Stanford Research DG535 Digital Delay and Pulse Generator
Stanford Research FS700
Stanford Research SR5030
Stanford Research SR510 Lock In Amplifier
STANFORD RESEARCH SR510 Single Phase Lock-in Amplifier GPIB .5Hz-100KHz CAL/CERT
STANFORD RESEARCH SR530 Dual Phase Lock-in Amplifier .5Hz-100KHz CAL/CERT,WARR.
Stanford Research SR530 Lock-In Amplifier, Dual Channel: 0.5 Hz to 100 kHz
Stanford Research SR530-01
Stanford Research SR560
Stanford Research SR620
Stanford Research Sr620 Time Interval Frequency Counter Calibrated option 1
Stanford Research Sr620 Time Interval Frequency Counter Calibrated sr625
Stanford Research SR640
Stanford Research SR640 Dual Channel Low-Pass Filter
STANFORD RESEARCH SR650 DUAL CHANNEL FILTER
Stanford Research SR760 Spectrum Analyzer
Stanford Research SR770 Spectrum Analyzer FFT 100 khz CALIBRATED FRESH
Stanford Research SR785
Stanford Research SR785 Dynamic Signal Analyzer
Stanford Research SR830
Stanford Research SR830 Lock-In Amplifier
Stanford Research SR850 DSP Lock In Amplifier
Stanford Research SR850 DSP LOCK-IN Amplifier
Stanford Research SR850 DSP Lock-In Amplifier, 100 kHz by SRS
Stanford Research SRS DS360
Stanford Research Systems CG635 2.05 GHz Synthesized Clock Generator
Stanford Research Systems DG535 4-ch. Digital Delay & Pulse Generator -
Stanford Research Systems DG535 Digital Delay Pulse Generator options 1,2,3,
Stanford Research Systems DG535 Four Channel Delay/Pulse Generator (Option 1 &2)
Stanford Research Systems DG535 Four Channel Digital Delay/Pulse Generator
Stanford Research Systems DSP Lock-In Amplifier model SR810
Stanford Research Systems FS735 14-Channel Distribution Amplifier
Stanford Research Systems Model CG635 2.05 GHz Clock Generator
Stanford Research Systems Model SR570 Low Noise Current Amplifier
Stanford Research Systems Model SR830 DSP Lock-In Amplifier
Stanford Research Systems Multi-Channel Scaler model SR430
Stanford Research Systems SR530 Lock-In Amplifier SR-530
Stanford Research Systems SR530 Lock-In Amplifier SR-530 Missing top panel
Stanford Research Systems SR650 Dual Channel Low Pass Filter, SRS
STANFORD RESEARCH SYSTEMS SR785 DYNAMIC SIGNAL ANALYZER SR 785 PASS SELF TEST
Stanford Research Systems SR850 Lock -In Amplifier
Stanford Research Systems SRS CG635 2.05 GHz Synthesized Clock Generator
Stanford Research Systems SRS SR780 Spectrum Analyzer FFT Calibrated
Stanford Research Systems SRS SR785 Spectrum Analyzer FFT PARTS UNIT
Stanford Research Systems, INC. DG535 Four Channel Digital Delay/Pulse Generator
Stangenes SI-3694 12KVA 3 phase transformer
STANLEY E30MF2X-7 USPP E30MF2X7
STANLEY QA1001-XXX QA ALPHA / QPM CONTROLLER QA1001 21A108722
STANLEY QA1001-XXX QA ALPHA IV XXX CONTROLLER 21A108722 QA1001XXX NIB
STANLEY T8001115 REP
STANLEY T801-115 USPP T801115
Star Line Track busway system tap rails 600 max volts 225 amp Starline
STAR LINEAR MODULE W/ PRECISION BALLSCREW MKK #11