福建中立恒自动化设备有限公司

1．输入/输出单元

输入/输出单元通常也称I/O单元或I/O模块，是PLC与工业生产现场之间的连接部件。

PLC通过输入接口可以检测被控对象的各种数据，以这些数据作为PLC对被控制对象进行控制的依据；同时PLC又通过输出接口将处理结果送给被控制对象，以实现控制目的。

由于外部输入设备和输出设备所需的信号电平是多种多样的，而PLC内部CPU的处理的信息只能是标准电平，所以I/O接口要实现这种转换。

I/O接口一般都具有光电隔离和滤波功能，以提高PLC的抗干扰能力。另外，I/O接口上通常还有状态指示，工作状况直观，便于维护。

PLC提供了多种操作电平和驱动能力的I/O接口，有各种各样功能的I/O接口供用户选用。I/O接口的主要类型有：数字量（开关量）输入、数字量（开关量）输出、模拟量输入、模拟量输出等。

常用的开关量输入接口按其使用的电源不同有三种类型：直流输入接口、交流输入接口和交/直流输入接口。

常用的开关量输出接口按输出开关器件不同有三种类型：是继电器输出、晶体管输出和双向晶闸管输出。

继电器输出接口可驱动交流或直流负载，但其响应时间长，动作频率低；而晶体管输出和双向晶闸管输出接口的响应速度快，动作频率高，但前者只能用于驱动直流负载，后者只能用于交流负载。

PLC的I/O接口所能接受的输入信号个数和输出信号个数称为PLC输入/输出（I/O）点数。I/O点数是选择PLC的重要依据之一。当系统的I/O点数不够时，可通过PLC的I/O扩展接口对系统进行扩展。

2．通信接口

PLC配有各种通信接口，这些通信接口一般都带有通信处理器。

PLC通过这些通信接口可与监视器、打印机、其它PLC、计算机等设备实现通信。

PLC与打印机连接，可将过程信息、系统参数等输出打印；与监视器连接，可将控制过程图像显示出来；与其它PLC连接，可组成多机系统或连成网络，实现更大规模控制。

与计算机连接，可组成多级分布式控制系统，实现控制与管理相结合。远程I/O系统也必须配备相应的通信接口模块。

3．智能接口模块

智能接口模块是一独立的计算机系统，它有自己的CPU、系统程序、存储器以及与PLC系统总线相连的接口。

它作为PLC系统的一个模块，通过总线与PLC相连，进行数据交换，并在PLC的协调管理下独立地进行工作。

PLC的智能接口模块种类很多，如：高速计数模块、闭环控制模块、运动控制模块、中断控制模块等。

ACHI SNH-G01-HQ-M-D2-11 SOLENOID VALVE 24VDC

REXROTH 4WE6GB60/EG24N9Z45 DIRECTIONAL SOLENOID VALVE

PARKER HHB20VXX01AL SOLENOID VALVE

FESTO JMC-4-1/4 PNEUMATIC SOLENOID VALVE  

NUMATICS 33DSP5C000030 SOLENOID VALVE

NUMATICS 33DSP5E SOLENOID VALVE

PARKER ECR1200S2 SOLENOID VALVE  

REXROTH 4WE6J61/EW11ON9DA SOLENOID VALVE DOUBLE

PARKER D3W4CNDK DIRECTIONAL CONTROL SOLENOID VALVE  

GC VALVES S211GF02L7GJ2 2-WAY NC 1-1/4 SOLENOID VALVE  

LOT OF 12 SMC SOLENOID VALVE

HYDAC SAF20M12T210A SOLENOID VALVE

PARKER A431 SOLENOID VALVE  

NORGREN UM/22354/22/131S SOLENOID VALVE

NUMATICS 33DSA541K SOLENOID VALVE

FESTO CJM-5/2-1/4-FH SOLENOID VALVE FACTORY SEALED

RACINE FD4 DSHS 701 30 (655204) SOLENOID VALVE  

NORGREN MN01EGA35AVTB SOLENOID VALVE

DENSION R5U06-511-15-A1 SOLENOID VALVE  

VICKERS DG4V53CMUEK620 HYDRUALIC SOLENOID VALVE

DUNGS MB403B01.15 SOLENOID VALVE 200VAC

VICKERS DG4V-3-6C-M-W-D-40 SOLENOID VALVE (AS PICTURED)  

DOUBLE A QG-3-C-10D1-TSP DIRECTIONAL SOLENOID VALVE

REXROTH 3726710220 SOLENOID VALVE  

PARKER L7652441119B SOLENOID VALVEFACTORY SEALED

REXROTH 4WE6JB60/EG24N9Z45 DIRECTIONAL SOLENOID VALVE

PARKER B53004PS SOLENOID VALVE

NUMATICS 32DSA4410 SOLENOID VALVE

NUMATICS 252SS500K000030 SOLENOID VALVE 120V IN A BAG

VICKERS 324739 SOLENOID VALVE  

NORGREN 8026570-0801-D SOLENOID VALVE  

NORGREN MN01EGA35AVTB SOLENOID VALVE

NUMATICS 12DSA400OA13T30 SOLENOID VALVE

PARKER L7652441119B SOLENOID VALVE

VICKERS KDG4V-3-2C20N-M-U-G7-60 SOLENOID VALVE

REXROTH 4WE6X197A62/EG24N9K4/VS09 DIRECTIONAL SOLENOID VALVE

FESTO MCH-3-1.4 SOLENOID VALVE  

VICKERS KDG4V32C20NZMUH760 SOLENOID VALVE

PARKER SSA50123701 SOLENOID VALVE

BURKERT 528A50,0NBRMS 00134453 SOLENOID VALVE 230V  

MAC 598-43-119AA SOLENOID VALVE

PARKER CCJ11S37B01 SOLENOID VALVE (AS PICTURED)

BOSCH 0 811 332 102 SOLENOID VALVE (NO KEYS)  

GC VALVES S211GH02T1JJ5 SOLENOID VALVE

NUMATICS NAF264102N000P SOLENOID VALVE WITH DB-0509 COIL  

PARKER B11DX35DC2AC2 SOLENOID VALVE  

ROSS 2776B6013 SOLENOID VALVE FACTORY SEALED

FESTO CJM-5/2-1/2-FH SOLENOID VALVE  

TOYOOKI HD3-2W-BCA-03A-WYA1 SOLENOID DIRECTIONAL VALVE  

FESTO MF-4-1/8 SOLENOID VALVE  

ASCO 125847-005-01 SOLENOID VALVE (AS PICTURED)  

NUMATICS 33SAD400O000030 SOLENOID VALVE

TOYOOKI HD3-2S-BCA-025A-WYA1 SOLENOID DIRECTIONAL VALVE  

GEMO ICH-88242178-00-511407 SOLENOID VALVE  

REXROTH 4WE6J60/EW11ON9Z45 SOLENOID VALVE

REXROTH 5710070530 SOLENOID VALVE

NORGREN V14R517AE313B SOLENOID VALVE  IN ORIGINAL PACKAGE

NUMATICS 12DSA40A13T30 SOLENOID VALVE

NUMATICS 12DSA40A SOLENOID VALVE 120 50/60  IN FACTORY BAG

REXROTH R901325984 SOLENOID VALVE

NUMATICS 34SAD43BO023K30 SOLENOID VALVE  IN A BAG

VICKERS DG4V-3S-2C-VM-FPBW-B5-60 DIRECTIONAL SOLENOID VALVE

EMERSON 222CB-1-1/4B1-1/4B SOLENOID VALVE 1-1/4"  

SMC NVFM250-N02-00-X52 5-PORT SOLENOID VALVE

VICKERS CG5060A-CW-B-81 SOLENOID CONTROLLED RELIEF VALVE

PARKER FS600S-13KF HYDRAULIC SOLENOID VALVE

NORGREN V14R511AE318B SOLENOID VALVE  IN ORIGINAL PACKAGE

NUMATICS 554BB63BK000030 SOLENOID VALVE

TOYO-OKI KOGYO AGU2-06-A-040 SOLENOID VALVE

ASCO 8215A40 SOLENOID VALVE 120/60 110/50

REXROTH Z4WE6X254-31/EG24N9K4/V/60 SOLENOID VALVE

VICKERS DGMX2-5-PP-BW-S-30 SOLENOID PRESSURE REDUCING VALVE  

TOYOOKI HD1-2WD-BCA-025A-WYD2-109 SOLENOID DIRECTIONAL VALVE

FAIRCHILD TT7800-401 SOLENOID VALVE 3-15 PSIG

CKD M4GA280-C6-E22-2-3 SOLENOID VALVE 24VDC

PARKER 7321GBN76NMCN0D100P3 SOLENOID VALVE

PALL AEROPOWER HPN3246065 1375904 SOLENOID VALVE

PLAST-O-MATIC EAST2V8W11-PP120/60 1/4" POLYPRO SOLENOID VALVE

PLAST-O-MATIC EAST2V8W11-PP 1/4" POLYPRO SOLENOID VALVE

VICKERS DG4V-3-7C-Z-M-U-H7-60 872179 SOLENOID VALVE

NORGREN SXE9573-A71-00 SOLENOID VALVE IN ORIGINAL PACKAGE

ASCO EF8401A200M SOLENOID VALVE (AS PICTURED)  

ROSS 277IA6949 SOLENOID VALVE  

ARO H254SS-12O-A-G SOLENOID VALVE  

BOSCH 081WV06P1V1028KE024/00 SOLENOID VAVLE  

ABEX DENISON ADS0633152L115A1 SOLENOID VALVE

PLASTOMATIC EASMT5V16W20-PF-120 SOLENOID VALVE

ROSS 2773A8984 SOLENOID VALVE 24VDC  

NUMATICS 554BB600K000030 SOLENOID VALVE IN FACTORY BAG

PARKER 7321GBN64NMCA0J111P3 SOLENOID VALVE  

G.W. LISK K12-429E-46E-05 SOLENOID VALVE

BUSCHJOST 8672400.8402 SOLENOID VALVE  

NUMATICS 11DSA441E SOLENOID VALVE IN A FACTORY BAG

PARKER D1VW1CVJCF4-75 HYDRAULIC DIRECTIONAL VALVE SOLENOID

NUMATICS 12SAD435KA SOLENOID VALVE

VERSA CGG-4232-NB1-CML-XX-A120 SOLENOID VALVE

BURKERT 0344D8,0NBRMS 46986 SOLENOID VALVE  

BURKERT 0344D20,0NBRMS 46087 SOLENOID VALVE  

PLAST-O-MATIC EAST4V8W11-PV-120 SOLENOID VALVE 1/2"

VICKERS DG4V-3S-6C-VM-FPBW-B5-60 DIRECTIONAL SOLENOID VALVE

LOT OF 4 VICKERS DG4V-3-2A-M-U-DP7-60 SOLENOID VALVE

NUMATICS 554BB600K000030 SOLENOID VALVE WITH BASE

NUMATICS 554BB600K000030 SOLENOID VALVE

PARKER B11DX35 SOLENOID VALVE

PARKER B43003RTS SOLENOID VALVE  

PARKER H45 SOLENOID VALVE

NUMATICS 153SS431K000030 PNEMATIC SOLENOID VALVE  

CARRIER 14-01113-02SV SOLENOID VALVE KIT  

VERSA VSW-3301-316 SOLENOID VALVE

VICKERS DG4V-3S-0BL-M-FPA5WL-B5-60 SOLENOID VALVE  

VICKERS DG4V-3-2AL-M-FPA3WL-B6-60 SOLENOID VALVE  

NUMATICS 12SAD435KA SOLENOID VALVE (AS PICTURED)

ASCO 8344C37 BRASS SOLENOID VALVE 110/50 120/60

BURKERT 0344D8,0NBRMS 48029 SOLENOID VALVE  

NUMATICS A23BA400L047E30 SOLENOID VALVE

FESTO SOLENOID VALVE CJM-5/2-1/2-FH

HUMPHREY 0624E2CD1205060 SOLENOID VALVE

NUMATICS A23BB400RP47Q SOLENOID VALVE

SCHRADER BELLOWS L2525921153 DOUBLE SOLENOID VALVE

PARKER D1VW030BNYCF SOLENOID VALVE

ROSS D2773B4037 SOLENOID VALVE 110-120/60  

VICKERS DG4V32AMFPBWLB5 DIRECTIONAL SOLENOID VALVE  

CKD 4GB320-10-B-3 SOLENOID VALVE

KUNKLE 919BDV03BKE SOLENOID VALVE  

ROSS 2773A6829 SOLENOID VALVE 24DC  

ROSS 2773A6829 SOLENOID VALVE 24VDC  

FESTO VD-3-PK-3 SOLENOID VALVEFACTORY SEALED

BOSCH 081WV06P1V1012WS024/00D51 SOLENOID VALVE 9810231438 (AS PICTURED)

BRAHMA EG12SGFD SOLENOID VALVE 240V

GENERAL ELECTRIC CR9500B100B2A SOLENOID VALVE (AS PICTURED)

VICKERS DG4V-3S-22A-M-FPA3WL-B5-60 SOLENOID VALVE  

ASCO SB40DK SOLENOID VALVE

NACHI SS-G03-E3X-R-D2-21 MAGNETIC SOLENOID VALVE  

NUMATICS 12DSA40A SOLENOID VALVE  

VICKERS DG4S4W-016C-B-60 SOLENOID VALVE

CIRCLE SEAL CONTROLS SV31A32P4P43 SOLENOID VALVE  

CKD W4GB239-MX-FL294194-3 SOLENOID VALVE 24VDC  

CKD 4F530-15 SOLENOID VALVE 24VDC

NUMATICS 555SS415K SOLENOID VALVE

NORGREN 2622213-3051-D SOLENOID VALVE

NUMATICS 11SAD400E011J61 MK7 SOLENOID VALVE  IN A BAG

PETER PAUL ELECTRONICS H23GG19DCV SOLENOID VALVE  

NUMATICS 33DS400K000030 SOLENOID VALVE  

NUMATICS S54SS400K SOLENOID VALVE IN FACTORY BAG

PARKER A441 SOLENOID VALVE  

ARO H254SS-OOO-N-G SOLENOID AIR VALVE

MAC 301G-110D-1 SOLENOID VALVE  

ROSS 2773B4861 W/1139F7916 SOLENOID VALVE 24VDC  

SKF 161-140-054 SOLENOID VALVE 98VDC

ROSS 2773B4861 SOLENOID VALVE 24VDC  

INGERSOLL RAND K313SD-12O-A SOLENOID AIR CONTROL VALVE

VICKERS DG4V 3 34C M U H7 60 SOLENOID VALVE  

FESTO MCH-3-1/4 SOLENOID VALVE  

SMC VQ7-6-FHG-D-3ZR-Q DOUBLE SOLENOID VALVE  

HERION 9301800 SOLENOID VALVE

ALCON ACDN4 SOLENOID VALVE  

YAMATAKE VEN4010A1200 GAS SOLENOID VALVE 200VAC 3/8"

MAC 6313D-000-PP-113DA SOLENOID VALVE  

MAC 57D-13-119AA SOLENOID VALVE  

HYVAIR D05S-2B-115A-35 SOLENOID VALVE  

REXROTH 5725555270 SOLENOID VALVE

NACHI SS-G01-H3X-R-D2-31 MAGNETIC SOLENOID VALVE  

ROSS 2773B5037 SOLENOID VALVE 24DC  

NACHI SS-G01-C5-GR-C115-31 SOLENOID VALVE

GEMU 2006646 625020D8840131-15360324-C1 SOLENOID VALVE

NUMATICS 11SAD400C011Z30 SOLENOID VALVE 120V IN A BAG

SCHRADER BELLOWS L6653822153 SOLENOID VALVE

PARKER A441 SOLENOID VALVE

FESTO MFH-5-1/2-TT30-SA SOLENOID VALVE  

NORGREN 8212402.8001 SOLENOID VALVE  

BURKERT 0331D5/64NBRBR SOLENOID VALVE (PK OF 2)

MOOG HPN72138ZB10079-000-21 ZDMVP06A4PP2GS/MA SOLENOID VALVE

NUMATICS 11SAD446E000061 SOLENOID VALVE 24VDC

CKD W4GB239-MX-3 SOLENOID VALVE 24VDC  

FESTO MEBH-5/2-D-1-ZSR-C SOLENOID VALVE  

LOT OF 3 NUMATICS 12SAD4X4KA PNEUMATIC SOLENOID VALVE 120V

VICKERS DG4V-3-OC-M-H7-60 SOLENOID VALVE  

MAC 6341D-611-PM-591DA SOLENOID VALVE

VICKERS DG4V-3-OC-M-U-H7-60 SOLENOID VALVE  

MAC 82A-BC-000-TM-DAAP-1DL SOLENOID VALVE

ASCO HT8215B64 SOLENOID VALVE (AS PICTURED)  

ALCON 36CZ235D1-1GDH (68NACP3X) SOLENOID VALVE  

ROSS 2771A6949 SOLENOID VALVE 24VDC  

VICKERS DG4V-6S-6C-M-U-H5-60 SOLENOID VALVE  

FESTO MT2H-5/3B-4,0-S-VI-B SOLENOID VALVE  

HUMPHREY VA500AE1311 2-3WAY 1/2" SINGLE SOLENOID VALVE

MAC 911B-PM-114CA SOLENOID VALVE  

VERSA VSG-4532-XX-A120 SOLENOID VALVE

VICKERS DG4V-3-2C207-M-U-HH7-60 SOLENOID VALVE

NUMATICS 11DSA444O013A SOLENOID VALVE  IN FACTORY BAG

VERSA VGS-3302 SOLENOID VALVE

FESTO JMFH-5-PK-3 SOLENOID VALVE  

DANFOSS 018Z6176 SOLENOID VALVE 220/230V  

SMC MXS8-40B-F9NL SOLENOID VALVE  

MAC 1367G-502D-15 SOLENOID VALVE  

NUMATICS 11DSA4410013A SOLENOID VALVE  

BURKERT 5281A25,0NBRMS 00134328 SOLENOID VALVE 230V  

NUMATICS 152SS431K SOLENOID VALVE  

PARKER D1VW004CNJPM SOLENOID VALVE

REXROTH GL62-0-A SOLENOID VALVE 96VDC 0.44A

FESTO MFH-5-1/2 SOLENOID VALVE 6420  

NUMATICS L53EM41GGS00061 SOLENOID VALVE .15A 24VDC  IN FACTORY BAG

PARKER 73218BN4UNLVN0C111C8 SOLENOID VALVE

NUMATICS 3SAD40 SOLENOID VALVE 120V IN A BAG