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。

AGIE POWER BOARD SUS-29B 625.823.0 AGIE NR. 630283.0 RFT-V CNC EDM 150 HSS

FANUC GE AMADA CIRCUIT BOARD A16B-0170-0280/05B 120 DAY

BIRMINGHAM COOLANT PUMP BROOK CROMPTON GF-BKP432TFKA-B401126 CINCINNATI 1000 CNC

AUTOCON TECHNOLOGIES DYNAPATH CRT DISPLAY DELTA-50MU V20931021MONITOR

KURODA PULCEN PC-1024ZLH-6K-68-Z1 MORI SEIKI SL-25A CNC LATHE SPINDLE ENCODER

SUMITOMO CYCLO DRIVE VM02-209 200-220V 6058833 MATSUURA CNC MILL MOTOR EACH 1

PANASONIC CRT DISPLAY MONITOR TX-1441AE-001 FB3240087 81259 87296 AGIE EDM

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DANFOSS COMPRESSOR SC10G 104G 8000 LBP LST/HST 589EPTHJ OIL CHILLER COOLER

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THIELENHAUS HONING GRINDER KM130 A2A ROTATING SPINDLE TOOL ASSEMBLY

NOP INDEX TURRET MOTOR TYPE-HMI-2261601 MFG.NO.7 METHODS SLANT 50 CNC LATHE

WIEDEMANN CENTRUM 3000 CNC TURRET PCH PRESS SPINDLE CARTRIDGE

FUJI CIRCUIT BOARD EXT I/O F709 6114 (DM SA F709 6114(2)A  EACH 1

SUMITOMO CYCLO DRIVE GEAR MOTOR TYPE TG-F HMV02-209 HITACHI SEIKI HG630 CNC MILL

DIETZ MOTOREN MOTOR TYP FDRU 90LB/4P NR. 5252578 691685 IP65 VDE0530 IP 65

BALLUFF ENCODER BM Z0912 6 9-1-7-00 9411 BRGB2-WAB12 DAEWOO PUMA 12S-3A 10S CNC

CHARMILLES ROBOFORM CIRCUIT BOARD 856 6100 B 96 280 18 CT8132870A

INDEX TOOL HER BLOCK W67 300.1200 0.87" DMG 42 CNC LATHE  PIECES

SUMITOMO ORBIT HYDRAULIC PUMP MOTOR H-70BA4FM-G 250MFG

L'ITE HERMETIQUE POLYOLESTER OIL R134A CAE4456Y 6B86880200 310 205 0025.03 DMG

DEUBLIN ROTARY ION 1109-044-212 HITACHI HG-400 CNC MILL HAAS CNC COOLANT THRU

SANYO DENKI SERVO MOTOR PICK UP IT 2GB-036AMZ 119784 BKONC 600 6B ENCODER

OKUMA OSP7000 FLOPPY DISK DRIVE 3.5'' FDD IT 1911-2301-87-037 7634-6002SC MR-3

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HITACHI SEIKI HG400 CONTROL PANEL 2752-48-139-00 K2 10-33-01-00 FNKB 20-03-00-00

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1985 FADAL 4020 904-1 CNC VERTICAL MILL CIRCUIT BOARD 1050-3A

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CINCINNATI MILACRON HARD DRIVE HITACHI 3-424-2284A01 DESKSTAR WDM-1 3-424-1987A

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MORI SEIKI SL-4A CNC LATHE SPINDLE ACTUATOR DRAW BAR YASNAC LX1 39.5" 2.635"

FINE-SODICK CIRCUIT BOARD HCD63 CPU-05 PC4180572 VER4 ETC1C110-1 CNC EDM

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BIRMINGHAM COOLANT PUMP BROOK CROMPTON GF-BKP432TFKA CINCINNATI ARROW 1000 CNC

PARKER PILOT VALVE IT D1VW1CE 40 CNC D1VW1CE40  PIECES

AGIE 120 CIRCUIT BOARD 802675 E CE 2914 MJG1027E NR.613562.8 CNC EDM

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NISSEI GTR INDUCTION GEARED MOTOR GOB-9172 200V 0Z183245 C BROTHER TC-201

LEBLOND MAKINO FNC 74 A-20 LINEAR SCALE ENCODER F87ONC FBRONC AMPLIFIER EDN209

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1993 HAAS VF-2 CNC VERTICAL MILL SILVER GRAPHICS KEYBOARD 33969660916 KEYPAD

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1998 BRIDGEPORT TC-3G CNC VERTICAL MILL ATC TOOL CAROUSEL LOT OF 10 PIECES

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97 HAAS HS-1 CNC MILL OIL DISTRIBUTOR LUBRICATOR 62096 JAF 14.7007A BRACKET

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1996 CHARMILLES ROBOFIL 400 CNC EDM VALVE W/ PSI GAUGE MANIF

HITACHI SEIKI H-CUT-304 CNC EDM CIRCUIT BOARD LVFU 68E2.110986

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NACHI DIRECTIONAL CONTROL VALVE SS-G01-C6-GR-D2-8900D MFG 680

DECKEL MAHO MH800W CNC MILL OPERATOR CONTROL PANEL SM16-110V 2950 E200 316 12KVA

SIEBE INTERLUBE LUBEPLUS LUBRICATOR LUBRICATION TANK PUMP SYSTEM LF2510 GJ

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NACHI SOLENOID VALVE SS-G01-E3X-GR-C1-12 ED64-C1-1A

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DAIKIN SOLENOID VALVE LS-G02-2CP-10-N MFG 11 66 DC24 PD-2P EACH 1

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DAIKIN SOLENOID VALVE JSO-G02-2NP-20-N-419 21 2X DC24 C-CD-2P

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1992 MATSUURA MC-800VF OPERATOR CONTROLPANEL SWITCH CONTROLLER EN4-1401A

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NIIGATA EN50 CNC HORIZONTAL MILL MAIN OPERATOR CONTROL PANEL CONTROLLER CNC

DAIKIN SOLENOID VALVE JSO-G02-2NP-20-D MFG 23 41 DC24 CD-2P  PIECES

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YASKAWA CIRCUIT BOARD IT CIMR-22AX3-W30438-3 CNC EDM

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YASKAWA CIRCUIT BOARD DF8100582 JANCD-CP06-02

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BALL CNC DISPLAY IT MODEL TV120 7-020-0141 5-014-0383 MONITOR

HARDINGE SPINDLE COLLET CHUCK NOSE 6.5" X 4" MIYANO JNC-45 CNC LATHE

MATSUURA CNC MILL CONTROL PANEL JZNC-OP101 0P101 HMK-3993  PIECES

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AMANO CIRCUIT TPS-P DEC-101100 BOARD

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SHIBAURA CIRCUIT BOARD A0P1C3-A H0167363 AOPIC3-A

FANUC POWER SUPPLY IT A14B-0067-B002 NO. PU 98189 5-1983

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LEADWELL V-25 CNC MIL BOARD HC2-SS SB31-IN 100V 3A 45950 G33AF214CE G33A

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MORI SEIKI SL-25A5 SL25 CNC LATHE TURRET TOOLING TOOL HER WEDGE WEDGES 4 PCS

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CHARMILLES EDM CIRCUIT BOARD 852379 811054 D 811054D