PLC在向微型化、网络化、PC化和开放性方向发展

全**PLC生产厂家约200家，生产300多种产品。国内PLC市场仍以国外产品为主，如Siemens、Modicon、A-B、OMRON、三菱、GE的产品。经过多年的发展，国内PLC生产厂家约有三十家，但都没有形成颇具规模的生产能力和名牌产品，可以说PLC在中国尚未形成制造产业化。在PLC应用方面，中国是很活跃的，应用的行业也很广。**估计，2000年PLC的国内市场销量为15~20万套（其中进口占90%左右），约25~35亿元人民币，年增长率约为12%。预计到2005年全国PLC需求量将达到25万套左右，约35~45亿元人民币。

PLC市场也反映了全**制造业的状况，2000后大幅度下滑。但是，按照Automation Research Corp的预测，尽管全球经济下滑，PLC市场将会复苏，估计全球PLC市场在2000年为76亿美元，到2005年底将回到76亿美元，并继续略微增长。

微型化、网络化、PC化和开放性是PLC未来发展的主要方向。在基于PLC自动化的早期，PLC体积大而且价格昂贵。但在**近几年，微型PLC（小于32 I/O）已经出现，价格只有几百欧元。随着软PLC（Soft PLC）控制组态软件的进一步完善和发展，安装有软PLC组态软件和PC-based控制的市场份额将逐步得到增长。

当前，过程控制领域**的发展趋势之一就是Ethernet技术的扩展，PLC也不例外。如今越来越多的PLC供应商开始提供Ethernet接口。可以相信，PLC将继续向开放式控制系统方向转移，尤其是基于工业PC的控制系统。

 

FOXBORO B0133LV USPP B0133LV

FOXBORO B0133ML USPP B0133ML

FOXBORO B0133MN USPP B0133MN

FOXBORO B0133NR-U USPP B0133NRU

FOXBORO B0133SA-D USPP B0133SAD

FOXBORO B0133TAB USPP B0133TAB

FOXBORO B0133TBB USPP B0133TBB

FOXBORO B0133TCC USPP B0133TCC

FOXBORO B0133TD-F USPP B0133TDF

FOXBORO B0133TDH USPP B0133TDH

FOXBORO B0133TK USPP B0133TK

FOXBORO B0134SV NSPP B0134SV

FOXBORO B0134SV USPP B0134SV

FOXBORO B0134SV-K THERMOCOUPLE AMPLIFIER MODULE 2B9443 T20 HPT T18 R10179

FOXBORO B0134ZR USPP B0134ZR

FOXBORO B0134ZT USPP B0134ZT

FOXBORO B0134ZX USPP B0134ZX

FOXBORO B0135CR USPP B0135CR

FOXBORO B0136CG USPP B0136CG

FOXBORO B0136HE-M USPP B0136HEM

FOXBORO B0136HE-P USPP B0136HEP

FOXBORO B0136KW-D USPP B0136KWD

FOXBORO B0137NQ NSPP B0137NQ

FOXBORO B0137NR USPP B0137NR

FOXBORO B0138EA (SR)

FOXBORO B0138EA NSPP B0138EA

FOXBORO B0138HS CELL SENSOR MODULE PRESSURE SWITCH DIAPHRAGM 316L 43952

FOXBORO B0138YM ANALOG INDICATOR

FOXBORO B0139CZ USPP B0139CZ

FOXBORO B0139EY USPP B0139EY

FOXBORO B0140PK 827 DP CELL SENSOR PRESSURE SWITCH DIAPHRAGM SS316L 44025

FOXBORO B0140XW USPP B0140XW

FOXBORO B0142CB USPP B0142CB

FOXBORO B0142CC USPP B0142CC

FOXBORO B0142CE USPP B0142CE

FOXBORO B0142CEHB USPP B0142CEHB

FOXBORO B0142CH-AA USPP B0142CHAA

FOXBORO B0142CM USPP B0142CM

FOXBORO B0142DQ USPP B0142DQ

FOXBORO B0142DQ-B USPP B0142DQB

FOXBORO B0142DR NSPP B0142DR

FOXBORO B0142DR USPP B0142DR

FOXBORO B0149AG USPP B0149AG

Foxboro B0154RC Control Circuit Board Board

FOXBORO B0154RC-GE USPP B0154RCGE

FOXBORO B0154RF-B USPP B0154RFB

FOXBORO B0154RR-C USPP B0154RRC

FOXBORO B0154RR-E USPP B0154RRE

Foxboro B0154RU J Control Circuit Board 12" x 14"

FOXBORO B0154RU USPP B0154RU

Foxboro B0154RV Control Board

FOXBORO B0154RW-E USPP B0154RWE

FOXBORO B0157YV NSFP B0157YV

FOXBORO B0157YV USPP B0157YV

FOXBORO B0157ZC USPP B0157ZC

FOXBORO B0158LY Non-Flow pH Electrode Assy 85A 85C 85D

FOXBORO B0158LY NSPP B0158LY

FOXBORO B0158LY USPP B0158LY

FOXBORO B0158MC NSPP B0158MC

Foxboro B0158MC PLC

FOXBORO B0158PT-B USPP B0158PTB

FOXBORO B0183AC USPP B0183AC

FOXBORO B0183AH USPP B0183AH

FOXBORO B0184YV USPP B0184YV

FOXBORO B0194RF, SMPA-07257 MODULE KIT, 4-20MA, 

FOXBORO B0195KC-F NSFP B0195KCF

FOXBORO B0195KC-F USPP B0195KCF

FOXBORO B0300BT USPP B0300BT

FOXBORO B0I57YV LEVER ASSEMBLY KIT NIB

Foxboro B101SW

FOXBORO B102ZT NSFP B102ZT

Foxboro B110ZM Fixed Pressure Regulator

Foxboro B110ZM Fixed Pressure Regulator BRAND IN ORIGINAL 

FOXBORO B110ZM PRESSURE REGULATOR 

FOXBORO B1271MU MOUNTING KIT STEEL 2 BRACKET 9.5MM HOLE 48463

FOXBORO B1278HE USPP B1278HE

Foxboro B2A8246

FOXBORO B4016XZ Change Kit C

Foxboro B6302FF

Foxboro B6302K2

Foxboro Back Plate Assembly CO124CF

Foxboro Ball Valve Assembly BS805JQ

FOXBORO BAR & base ASSEMBLY N0999SX

FOXBORO BASM02 USPP BASM02

Foxboro Bellow Transmitter 8700 Fox Boro Model 45 Part #U101A0 Cg968

Foxboro Bellows 7350 Fox Boro Cg967

Foxboro Bellows Assy 9200 Cg965

Foxboro Bellows Assy Q00017750 Cg964 fox boro

Foxboro Bellows C-123 BA

Foxboro Bellows C123-BA

Foxboro Bellows Unit C0124FF 1/4 coarse THD

Foxboro Bitsum Chips 500 S1635-1

FOXBORO BO123HE PRESSURE REGULATOR 250PSI 0.5-60PSI WITH GAUGE 30PSI 74460

FOXBORO BO123HE PRESSURE REGULATOR WITH GAUGE 0.5-60PSI 250PSI 1/4IN B201570

Foxboro BO123HF Pressure Regulator

FOXBORO BO138RA B0138RA PRESSURE TRANSMITTER ANALOG OUTPUT MODULE ASSEMBLY 46547

FOXBORO BO139EY B0139EY PRESSURE TRANSMITTER ANALOG OUTPUT MODULE ASSEMBLY 46545

FOXBORO BO300AG-FOX USPP BO300AGFOX

FOXBORO BOARD 3A2-V3D ST A 

FOXBORO BOARD B0132UE-G B0132UE 

FOXBORO BOARD B0132UG-D 

Foxboro Board Card 2AX+AVS 2AX AVS 2AXAVS St A NIB

FOXBORO BOARD D0140BA-B 

FOXBORO BOARD D0140BC-C 

FOXBORO BOARD D0140BD-B 

FOXBORO BOARD D0140BH-C REPAIRED BY PSI

FOXBORO BOARD D0140JA 

FOXBORO BOARD D0140JB 

FOXBORO BOARD D0140JF-R D0140JFR 

FOXBORO BOARD D0140KE-C 

FOXBORO BOARD D0140KF-C 

FOXBORO BOARD D0141DG-H 

FOXBORO BOARD F0109AB-G 

FOXBORO BOARD FWS-KB2 ST.A REPAIRED BY PCS

FOXBORO BOARD PWA L0119QS L0119 

Foxboro Bodine KCI-23RB, 115V Electric Motor, G-100 KW. NOS 

FOXBORO BOMB HD AP20 P/N: P0901VK (TR-1)

Foxboro Booster Relay LEXG-F

Foxboro Booster Relay LEXG-G

FOXBORO BOOSTER TYPE 20 250 PSI B102RN

FOXBORO BOOSTER TYPE 20 250 PSI B102RN (W-3-18(B))

FOXBORO BRASS 2 WAY AIR SWITCH LOAD OFF LIFT DUAL 4 PORT 1/4NPT 79520

FOXBORO BRASS 2 WAY AIR SWITCH LOAD OFF LIFT DUAL 4 PORT 1/4NPT 79521

FOXBORO BS805JU FLOW CHAMBER

FOXBORO BS806AN NSFP BS806AN

FOXBORO BUOYANCY LEVEL TRANSMITTER WITH DISPLACER

Foxboro BUX Cable Connector AD-A6 (Lot of 7)

FOXBORO C0128CB NSPP C0128CB

FOXBORO C0130LU NIB

FOXBORO C0130YB NSFP C0130YB

FOXBORO C0130YB NSPP C0130YB

FOXBORO C0130ZR NSFP C0130ZR

FOXBORO C0131BB NSPP C0131BB

FOXBORO C0131LF NSFP C0131LF

FOXBORO C0131LG NSFP C0131LG

FOXBORO C0131MA NSFP C0131MA

FOXBORO C0131MA USPP C0131MA

FOXBORO C0132AA USPP C0132AA

FOXBORO C0133RE NSPP C0133RE

Foxboro C0136HZ Air Control Relay M40G NOS

FOXBORO C0136HZ NSFP C0136HZ

FOXBORO C0136HZ USPP C0136HZ

FOXBORO C0136NCDA USPP C0136NCDA

FOXBORO C0136NL USPP C0136NL

Foxboro C0-136NX-DB C0136NXDB Circuit Board SAR

Foxboro C0-136NX-EB C0136NXEB Circuit Board for 1ink Control Station SAR

Foxboro C0-136NX-EB C0136NXEB Circuit Board SAR

FOXBORO C0136TP USPP C0136TP

FOXBORO C0136TX USPP C0136TX

FOXBORO C0136YE-FRB USPP C0136YEFRB

FOXBORO C0136YK-A USPP C0136YKA

FOXBORO C0136YUAA USPP C0136YUAA

FOXBORO C0138ZB NSPP C0138ZB

FOXBORO C013HZ KIT,RELAY AND GASKET IN A 

FOXBORO C0140GJ NSPP C0140GJ

FOXBORO C0140PE NSPP C0140PE

FOXBORO C0140ZJ NSFP C0140ZJ

FOXBORO C0141RA USPP C0141RA

FOXBORO C0141RA/CO141RA 50285 SERVO MOTOR NNB

FOXBORO C0143AH USPP C0143AH

FOXBORO C0143DL NSPP C0143DL

FOXBORO C0146UT NSPP C0146UT

FOXBORO C01548E USPP C01548E

FOXBORO C0156GT-A CIRCUIT BOARD A CARD PLC MODULE F8613A P012MJH 47816

FOXBORO C0162BX USPP C0162BX

Foxboro C1002

FOXBORO C1002 USPP C1002

FOXBORO C100CX INTERGRATOR RELAY TRANSMITER NIB

FOXBORO C100EE NSPP C100EE

FOXBORO C100EM NSPP C100EM

FOXBORO C119KY NSPP C119KY

FOXBORO C124EN BELLOWS ASSEMBLY PRESSURE ELEMENT FOR PRESSURE ConTROLLER 46645

FOXBORO C124MW MANIFOLD ASSEMBLY (B94)

FOXBORO C135YN NSFP C135YN

Foxboro Cable Block Termination Fieldbus P0972DX CP60

Foxboro Cable Connector BUX 533 140 011 (3)

Foxboro Cable for 51B Series Terminals P0971PD RS232

FOXBORO CABLE G0113DZ F0109AL-A 

Foxboro Cable P0800DA

Foxboro Cable Peripheral SCSI P0500UX

FOXBORO CABLE SERIAL GCIO 2 FEET P0922AW REV E

Foxboro Calibration Apparatus Model MSI14206 43.50

FOXBORO CALIBRATION APPARATUS MSI-14206 49.99

Foxboro Capillary System W/ Helical Bourden 5000 PSI Type AA5 Cg901

Foxboro Capsule ASY W/Bourdon ASY Model HGH Fox 12950, 12930, 93500 Cg914

Foxboro C-ESA21AN 40 RZ-RFE3F Transmitter Recorder 120vac 4-20mA Humidity Temp

FOXBORO CF200BX USPP CF200BX

Foxboro CFS10 Sanitary Mass Flowmeter

FOXBORO CFS10-03SCFNN 275PSI 150 1/2IN STAINLESS MASS FLOWTUBE CFT10/50 D203223

FOXBORO CFS10-03SCFNN I/A SERIES 275PSI STAINLESS 150 1/2 IN FLOWTUBE D204892

Foxboro CFS10-05SCCGZ-E Mass Flow Tube CFS1005SCCGZE Meter Flowtube I/A Series

Foxboro CFS10-05SCFBB I/A Series Mass Flow Tube - 

FOXBORO CFS10-10CPFBB FLOW METER 

FOXBORO CFS10-15SCFBB MAS FLOW TUBE

Foxboro CFT10 I/A Series Mass Flow Transmitter

FOXBORO CFT10 MASS FLOW TRANSMITTER 

Foxboro CFT10-PAENCGZ

FOXBORO CFT10-PAENFNS USPP CFT10PAENFNS

FOXBORO CFT10-SAENFNN I/A MASS FLOW TRANSMITTER ,

FOXBORO CFT30-1411B2/CFS30-A1AR0B1 NSFP CFT301411B2CFS30

Foxboro CFT50 I/A Series Digital Mass Flow Transmitter E19 (1024)

Foxboro CFT50-B1EACBK-B I/A Series Digital Mass Flow Transmitter E8 (1024)

Foxboro CFT50-B1EACBK-B I/A Series Dilital Coriolis Mass Flow Transmitter

Foxboro CFT50-B1EACBN-B I/A Series Digital Mass Flow Transmitter F20 (1024)

Foxboro CFT50-B1EADBZ Mass Flowmeter CFT50B1EADZ

FOXBORO CHANGE KIT B4016XZ 

Foxboro Chart Drive 110VAC 24 Hour 60 Cycle 4RPH M132NC Synchron Detent Clutch