福建中立恒自动化设备有限公司

目前，世界上有200多个厂家生产可编程序控制器产品，厂家有德国的西门子，美国的Rockwell(AB)、通用(GE),日本的三菱、欧姆龙，法国的施耐德等。

可编程序控制器总的发展趋势是向高集成度、小体积、大容量、高速度、易使用、高性能方向发展。具体表现在以下几个方面：

(1)向小型化、专用化、低成本方向发展

20世纪80年代初，小型PLC在价格上还高于小系统用的继电器控制装置。随着微电子技术的发展，新型器件大幅度的提高功能和降低价格，使PLC结构更为紧凑，功能不断增加，将原来大、中型PLC才有的功能移植到小型PLC上，如模拟量处理、数据通讯和复杂的功能指令等，但价格不断下降，真正成为继电器控制系统的替代产品。

(2)向大容量，高速度方向发展

大型PLC采用多微处理器系统，有的采用32位微处理器，可同时进行多任务操作，处理速度提高，特别是增强了过程控制和数据处理的功能。另外，存储容量大大增加。

(3)与计算机联系密切

从功能上看，PLC不仅能完成逻辑运算，且计算机的复杂运算功能在PLC中也进一步得到利用，从结构上看，计算机的硬件和技术越来越多地应用到PLC；从语言上看，PLC己不再是单纯用梯形图语言，而且可用多种语言编程，如类似计算机汇编语言的语句表，甚至可直接由计算机语言编程；在通讯方面，PLC与计算机可直接相连并进行信息传递。

(4)发展多样化

可编程序控制器发展的多样化体现在3个方面：产品类型、编程语言和应用领域。

(5)模块化

PLC的扩展模块发展迅速。功能明确化、专用化的复杂功能由专门模块来完成。主机仅仅通过通讯设备向模块发布命令和测试状态，这使得PLC的系统功能进一步增强，控制系统设计进一步简化。

(6)网络与通讯能力增强

计算机与PLC之间以及各个PLC之间的联网和通讯的能力不断增强，使用工业网络可以有效地节省资源、降低成本、提高系统可靠性和灵活性，致使网络的应用有普遍化的趋势。

(7)多样化与标准化

生产PLC产品的各厂家都在大力度地开发自己的新产品，以求占据市场的更大份额。因此产品向多样化方向发展，出现了欧、美、日多种流派。与此同时，为了推动技术标准化的进程。一些国际性组织，如国际电工委员会(IEC)不断为PLC的发展制定一些新的标准，如对各种类型的产品作一定的归纳或定义，或对PLC未来的发展制定一种方向或框架。

(8)工业软件发展迅速

与可编程序控制器硬件技术的发展相适应，工业软件的发展非常迅速，它使系统应用更加简单易行，大大方便了PLC系统的开发人员和操作使用人员。

可编程序控制器的输出信号类型可以是开关量、模拟量和数字量。输出单元从广义上分包含两部分：一是与被控设备相连接的接口电路，另一部分是输出的映像寄存器。

PLC运行时CPU从输入映像寄存器读取输入信息并进行处理，将处理结果放到输出映像寄存器。输出映像寄存器由输出点相对应的触发器组成，输出接口电路将其由弱电控制信号转换成现场需要的强电信号输出，以驱动电磁阀、接触器、指示灯等被控设备的执行元件。

PN5003 ifm Pressure Sensor with display 0...25 bar G1/4 18...36 V DC

MURPHY SWICHGAGE P/N 10-35-0193 Temperature Gauge 120 deg C 250 deg F

ASCO SCXE210C094V 2-Way NC Brass Water Solenoid Valve 1/2" 230V AC 50 Hz

PARKER DC7021-42/16 Replacement Solenoid Coil 98V DC 0.46 A

HYDAC VM8-D.0 L24 Differential Pressure Filter Clogging Indicator

SMC IR3000-04BG1 Precision Air Regulator 1/2" 0.01~ 0.2 Mpa Max 1.0 Mpa

Burkert 236961 Type SET1 0243 230/50 AC 00236961 Replacement Coil 230V AC 50 Hz

R900347495 Rexroth Z2S6-1-64 Sandwich Module Design Hydraulic Check Valve

NORGREN 4024200 Pneumatic Lever Valve 3/2-Way G1/2 16 bar

NORGREN SR2304-000 Roller Lever Actuated Directional Control Valve 3/2-way 1/2"

ED IP65

DANFOSS FBV-2 193B0915 Motorized Ball Valve DN15 220V AC 50/60 Hz 6W 20 bar

FESTO GRP-10-PK-3 12743 precision one-way flow control valve

PARKER Kuroda B012LW-03-G Air Filter Regulator 3/8" Metal Bowl and sight glass

ASCO D210D95 2-Way NC Solenoid Valve 3/4" 240/50 AC 0-100 psi

Bosch 0820034023 5/3 CC Pneumatic Solenoid Valve 1/8" 24V DC 1824210289

5 pieces 16C IMPERIAL KWIK-COUPLER Straight Coupler 45° Flare 1/4" MXF

DANFOSS RLS 222/2-68 Actuator Moted On/Off Position Indicator

6 pcs Clippard MJV-2 2-Way Normally-Closed Detented Poppet Valve 1/8" NPT

RHZ25SREDA3C PARKER Ermeto Hydraulic Check / Non Return Valve 25 mm Tube X G1

Parker AN Legacy 8L502-254 5/2-Way 1/4" Toggle Valve Pneumatic Dir. Control

SULLAIR 02250112-032 Inline Compressed Air Filter 1/4" Max 12 bar 150 deg.

Pack of 5 pieces KITZ 1/2" Female NPT 3 Way Brass Ball Valve L-Port 400 WOG

ASCO SC8262H232 2-Way NC General Service Solenoid Valve 1/4 NPT 120/60AC

IMI Norgren Super X 03063702 3 Way Lever Operated Pneumatic Directional Valve

ASCO Red-Hat OFSP8262G212 2-Way NC General Service Solenoid Valve 1/4" 120/60 AC

DANFOSS AKS32R 060G6324 Pressure Sensor 0..32 bar

ODE 21PW4K0T120 2/2 Way NC solenoid valve G1/2 240/60 AC 0.5-18 bar

E-3198-84XX-A120 Pneumatic Valve Solenoid Operator 120/60 V AC

Burkert 6014 C 2.0 3/2 NC Solenoid Valve 125334 24V 50 Hz G1/8 0-10 bar

Burkert Typ 6213 A10 126262 W 2-Way NC Solenoid Valve 1/2" 110V AC 50 Hz 8W

E321K10 Parker Lucifer 2-Way NC G1/4 Brass Solenoid Valve 240/60 AC

Rexroth 5634430100 3/2-directional valve Series CD07 CD07-3/2NC-SR-HLX-G014

FESTO HEE-D-MINI-24 172956 Pneumatic Soft Start Valve

R901092502 Rexroth 04523003203500A-VBSN-08U-3:1-35-A Screw-In Cartridge Valve

GO Systems Model No. 112110 PROXIMITY LIMIT SWITCH 1250 Watts

R412007701 Rexroth RV1 series RV1-G012 10.5 bar Compressed Air relief valve 1/2

TCR Electric Driven Motorised 2 port Ball Valve 3/4" 230V AC 50/60 Hz 5VA

Parker PHS530S-10 5 port 2-position Single Solenoid Valve 3/8" 110V AC

All Prosperity Model L3-L Bronze Safety Valve 1/2" MXF 13 mm set pr. 10 bar

Camozzi 951-000-35 ISO 1 5599/1 5/2-Way Air Pilot Pneumatic Directional Valve

ASCO Red-Hat Series 8262 8262G2 2/2 Solenoid Valve 1/8" 120/60 AC

ASCO Red-Hat 8262G208 V Solenoid Valve 2-Way NC 1/4" 24V DC FT 0-25 psi

HOLMBURY GG90-04-B Hydraulic Rotary ion / Rotor Seal 3/4" BSP 120 LPM 310 bar

BURKERT 00017383 0375-C-0 1,2 NBR FLNSCH 3/2 Pivoted Armature Solenoid Valve 24V

JRG LegioStop 5295.320 Upper part of JRG LegioStop for KRV lockable 3/4" DN20

JRG LegioStop 5266.240 KRV lockable PN 16 1/2"

EWO 5370.4 Condensate Auto Drain Valve G1/8 4-16 bar

Honeywell PX3 Heavy Duty Pressure Transducer PX3AN2BF010BSCHL 10 bar 1/8-27 NPT

Asco Joucomatic 55090022 3/2 NC G1/8 Pneumatic Spool Valve 230V AC

Hydraulic Valve Solenoid Coil Model AS serial 20 Class H 24V DC 2A ID : 30 mm

Pack of 5 pieces Schrader G25 22 mm Solenoid Valve Coil 110V AC 5 VA 9mm ID

Pack of 5 pieces Schrader G25 22 mm Solenoid Valve Coil 240V AC 5 VA 9mm ID

KOGANEI SV062E1 Vacuum Solenoid Valve 3-Way 1/4" AC 100V 0-750 mm Hg

KOGANEI M062-4E1 Solenoid Valve 100V AC 0-0.9 MPa Sub-base moting

ROSS D5500A7001 MUFFL-AIR 1-1/4" BSPT female Pneumatic Exhaust Silencer Muffler

BOSCH 0 821 302 400 0821302400 Pressure Regulator G1/4 10 bar

HAWE Type SB SB 31G-40 2-Way flow Control Valve with sliding throttle G3/4"

SMC CDQ2B20-5DMZ-M9 PVLS Compact Cylinder with Switch D-M9PV

SMC CDQSB20-5DM-M9 PVLS Compact Cylinder with Switch D-M9PV

Parker 141GV 3/2 Way 1/4" Direct Acting Sol Valve  KT10 Coil 24V DC 10W

HYDRONORMA GU35-4-A Solenoid Coil assembly plger 24V DC 26W GU354A

WABCO 9735000000 Quick Release Valve M22X1.5 973 500 000 0

R982620898 Rexroth Pneumatic Double Check / Shuttle Valve M22X1.5

Tamrotor NT2033 Marine Compressor Solenoid Valve

PARKER 16NL 8V-CO8L-1/3-V-SS-PP Stainless Steel Check Valve 1/2" MXM

Alfa Laval Tumba Pressure Transmitter 597255 02

VORDOSCH KRISTALL KLAR INLINE WATER FILTER 3/4" Male / 1/2" Female

CompAir Maxam 703111210A 3/2-Way G1/8 Red Push Button Pneumatic Valve

9F800S PARKER Hydraulic Flow Control Valve 1/2" 15 GPM 5000 PSI

FISCHER  PORTER 10A 3130 series 10A3135N Purge Meter 1/4" NPTF w needle valve

FESTO CPE10-M1BH-5J-M5 196875 5/2 M5 bistable pneumatic solenoid valve 24V DC

Parker CSH101B-6T Hydraulic Shuttle Valve Upper Hydraulic 10 GPM 5000 psi SAE-6

Oil States OSI LAP141DF 3/4 QRV w/sleeve Quick Release Valve QRV

Eaton Airflex 145141DF 3/4" QRV Quick Release Valve with rubber sleeve

Eaton Airflex 145141DQ 3/4 QRV Muffler Kit

Parker PS1-E21102B 12001153 Pneumatic Modular Valve P2E-KS32C 24V DC

IMI Norgren Buschjost Cat No 8304 Replacement Solenoid Coil 230V AC 40-60Hz 25VA

HYDAC VD1 C.0 /-W Differential Pressure Filter Clogging Indicator

HYDAC VD1 C.0 /-W-P Differential Pressure Filter Clogging Indicator

MP FILTRI E6 Electrical / Visual clogging Indicator 2 bar

MP FILTRI E9 Electrical / Visual clogging Indicator 10 bar

HONEYWELL V4046C1088 Gas Solenoid Valve 3/8" 208V 60 Hz 10 psi V4046C 1088

Degree Controls Inc ACCUSENSE 300 Series Air Flow Switch 300T-U-0-B2

ASCO 266763-902-D Solenoid Valve Coil 120/60 AC 110/50 AC

Crompton Instruments E244-023A Panel Meter Range 0/5/15 AMPS AC SCALED 0/300/900

Norgren 03040102 3/2-Way G1/8" Air-Pilot Operated Pneumatic Directional Valve

FISCHER ME6106087CH9 Pressure Transmitter 0-6 bar In : 24V DC Out : 0...10V DC

MOORE Nullmatic Model 681 Biasing Relay 1/8" NPT

NORGREN 9X148C-8 Solenoid Valve 5V DC Watts 0.7 Orifice 0.020

Crompton Instruments E244-023A Panel Meter Range 0/5/15 AMPS AC SCALED 0/200/600

ALEMITE Model 7604-1 Air Pressure Regulator 1/4" NPT F 0-125 psi Max 20 bar

AVCON 9130B61/CF8/S4/E/BSP 2/2 NC G1/4 Steam Solenoid Valve 230V AC 4 bar 150°C

NAGANO KEIKI Type KM15 Pressure Sensor 1 Mpa

BASOTROL H95CS-2 Low Pressure Solenoid Valve 208/240 V 60Hz G- LP 1/2 psi

Crompton Instruments E244-022A Panel Meter Range 0/5/10 AMPS AC 0/1500/3000A

SMC piping modules KBH2-R2S KBE2-06 KBZ2-08 KBB3-R1 KBH2-R3S 1 pack each

5 pcs. Automatic Valve 7019-9DB Replacement Solenoid Coil 24V DC 4.8W 48V 50/60

ASCO Red-Hat 8320A009 3-Way 1/4" General Service Solenoid Valve 24/60 AC

J.D.GOULD B3-21 2-Way Direct Acting Solenoid Valve 1/4" 120/60 AC 100 psi FREON

Hydraforce NV10-20D Hydraulic Needle Valve cartridge

ASCO Numatics L11BA452BG00061 Pneumatic Solenoid Valve 225-479A 24V DC 4.8W

Parker Solenoid Coil 7D300C2 1SHH4 24V DC 22W

Parker Solenoid Coil BB06-053-C01H 38 1SHH4 24/60 AC 11W

HEROSE 50051.0004 Bronze Safety Valve G1/2 MXF set @ 6 bar

VICKERS EATON RV8 Hydraulic Relief Valve RV8-10-C-0-50

Parker CAS 024 D 5/8" Super Coil 24V DC 18W

SIKA VH series VH780J411LS10110 Paddle Flow Switch

POTTER VSR Water Flow Monitor VSR 2-1/2" VSR-2.5"

REXROTH P 55201 PNEUMATIC FLOW REGULATOR 3/4" NPT Max 250 psi P55201

R901091914 Bosch Rexroth Hydraulic Cartridge Valve 04114903 5635000

IMI Norgren SuperX 03041902 3/2 Way 1/8" Pneumatic Selector Valve

 4..20mA

SMC C55B63-10 C55 ISO COMPACT PNEUMATIC CYLINDER 63 mm bore x 10 stroke

Parker PV Series P2V-AV500PS 5/2-Way Air-Pilot Directional Control Valve

EWO ARMATUREN 322.36M Compressed Air Filter G1/2 Metal Bowl 25 bar

IWATA RR-56B Pressure Regulator with Gauge 0-5 kgf/cm2 RR56B

FESTO Solenoid valve VSVA-B-P53E-H-A1-1C1 546706

FESTO Pneumatic Sensor 19562 SDE-10-10V/20MA 0-10 bar 0-145 psi G1/4

TAC VZ29 2-Way ZValve 721-0534-000 DN15 Kvs 1.0

ASCO 8262G7 2-Way NC General Service Stainless Steel Solenoid Valve 1/4 120/60AC

ASCO 8262G7 2-Way NC General Service Stainless Steel Solenoid Valve 1/4 240/60

5 pieces pack PARKER ZB14 SOLENOID COIL 220V / 230V AC 50-60 HZ 14W IP65

Honeywell DPTM 252 Differential Pressure Transmitter 4 - 20mA 0 - 250 Pa

REXROTH 5634200100 Plger/Spring Pneumatic Directional Valve 5/2-way G1/8

Norgren R06 Water or compressed Air Regulator R06-2CW-NNED 1/4" Range 1-50 psi

R901090825 Bosch Rexroth Replacement Solenoid Coil 24V DC Class H DIN 43650

KEYSTTYCO Flow Control F791 Solenoid Valve 120/60 AC SMC VFN2120N-3DB-02-X

WOERNER KFI-A/B/W/X/85 Part # 222152 Level Switch with Jction  IP65

MARTONAIR X3367702 X3 3677 02 5/3-Way Lever Op. Pneumatic Control Valve G1/4"

REXROTH 5341080000 534 108 000 0 Pneumatic Throttle Check Valve NW7- M14X1,5

SMC VPA542-1-02FA-F 3/2 Way 1/4" Air Pilot Operated Pneumatic Valve