输入输出接口是PLC与工业现场控制或检测元件和执行元件连接的接口电路。PLC的输入接口有直流输入、交流输入、交直流输入等类型;输出接口有晶体管输出、晶闸管输出和继电器输出等类型。晶体管和晶闸管输出为无触点输出型电路,晶体管输出型用于高频小功率负载、晶闸管输出型用于高频大功率负载;继电器输出为有触点输出型电路,用于低频负载。
现场控制或检测元件输入给PLC各种控制信号,如限位开关、操作按钮、选择开关以及其他一些传感器输出的开关量或模拟量等,通过输入接口电路将这些信号转换成CPU能够接收和处理的信号。输出接口电路将CPU送出的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、接触器等被控设备的执行元件。
Spectroline PE-24T, 115 V / 60 Hz, 0.18 A, Eprom Erasing Ultraviolet Lamp
WESTINGHOUSE 2837A86G02 PC BOARD
(H3-7) 1 FORRY 150183 PROCESSOR BOARD
ALLEN BRADLEY 1774P1 POWER SUPPLY
HP 2 to 8.4 GHz, SMA (F) YIG Tuned Oscillator + Board
Buckeye / Cooper Tools 31R 540B 20,000 RPM, Lever Action, Pneumatic Air Drill
Brooks 1110Ck42Ccaaa Flow Meter (Dtop)
(L17) 1 CTI NETWORK INTERFACE MODULE
Narda 901NM 3 to 10 GHz, Type N (M) Micrometer Tuned Coaxial Short
TTC PR-40A RS-232C/Parallel Interface 9 x 7 Dot Matrix Thermal Printer,
(X14-4) 1 ALLEN BRADLEY 836-V11-JFBS PRESSURE CONTROL
1 Dv Electronics T3-3 Rev 02 Digital Input Module (V39)
Festo Electric Control Block / Valve Terminal IFB8-02 #52816
Fife Corp Web Tracker Controller CDP-01-M Scratch & Dent #68339
Acopian 5EB100 5V / 1.0A, 0.05% Reg. Screw Terminal, AC to DC Power Module
Tektronix , 75 Ohm, BNC (F) All Ports, Accessory Text Fixture
Omega CDH-37, 5 Ranges, 0 to 20,000 umho/cm, 5 to 45°C Portable Conductivity Kit
(6882) Acopian Power Supply A24H1200 24 VDC
Moeller I/O Winbloc DP-32DI/P-2X16 #42067
Horiuchi Machinery Injection Sled Cylinder HM/C 10 #80514
Siemens Servo Motor 1FK7083-5AF71-1FV5-Z #53894
(X6-1) 1 EAGLE SIGNAL HZ170A6 COUNTER
Indramat Controller TRANS 01.5/1 #34004
Battenfeld Operator Interface Panel UniLog 1020 #54470
Stellar Sr22-22 Soft Starter
HP Rev A.02.02 HP 8510 Circuit Modeling Prog. Boot Disk
(0069) Cutler Hammer Photoelectric Sensor & Limit Switch E51CLP3
Ge Fanuc AC Servo Motor A06B-0314-B567 #27299
Barber Colman Insta-Set Module 80BB Scratch & Dent #24837
Narda 4.0 to 10.0 GHz, 10 dB, Type N (F) all Ports Directional Coupler
MOORE INDUSTRIES PROCESS CONTROLLER
Narda 8621C 0.3 to 26 GHz, 20 mW/cm2 , 200 W/m2. Isotropic Probe Assy **SALE**
Hoerbiger Origa Cylinder PA #57798
HP 40A 2.4 to 12.4 GHz, Type N (M) to BNC (F), Coaxial, Tunable Mount
HP / Agilent Digital IF Board Assy., for 8753C, 8702D, 8719D, etc.