IC698PSA100
IC698PSA100
IC698PSA100
PLC是采用“顺序扫描，不断循环”的方式进行工作的。即在PLC运行时，CPU根据用户按控制要求编制好并存于用户存储器中的程序，按指令步序号（或地址号）作周期性循环扫描，如无跳转指令，则从***条指令开始逐条顺序执行用户程序，直至程序结束。然后重新返回***条指令，开始下一轮新的扫描。在每次扫描过程中，还要完成对输入信号的采样和对输出状态的刷新等工作。
PLC的一个扫描周期必经输入采样、程序执行和输出刷新三个阶段。
PLC在输入采样阶段：首先以扫描方式按顺序将所有暂存在输入锁存器中的输入端子的通断状态或输入数据读入，并将其写入各对应的输入状态寄存器中，即刷新输入。随即关闭输入端口，进入程序执行阶段。
PLC在程序执行阶段：按用户程序指令存放的先后顺序扫描执行每条指令，经相应的运算和处理后，其结果再写入输出状态寄存器中，输出状态寄存器中所有的内容随着程序的执行而改变。
输出刷新阶段：当所有指令执行完毕，输出状态寄存器的通断状态在输出刷新阶段送至输出锁存器中，并通过一定的方式（继电器、晶体管或晶闸管）输出，驱动相应输出设备工作。
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地址:厦门市海沧区滨湖一里7号2008室
ADRESS:Room 2008,No.7 buliding of
BingHuYiLi,HaiCangDistrict,XiaMen city,China
RELIANCE DYNAMIC BRAKING KIT FLEXPAK 3000 WEBPACK 3
ALLEN BRADLEY LIQUID LEVEL AND RESISTANCE SENSING C
ALLEN-BRADLEY 1771-IL C SERIES C ISOLATED ANALOG INPUT
WESTINGHOUSE CIRCUIT BOARD 7381A28G04
JOHNSON CONTROLS METASYS EN-BSF201-0 2-SLOT BASE FR
JOHNSON CONTROLS METASYS NU-XRM101-0 BINARY INP/OUT MOD
ENDRESS & HAUSER TRAN***ITTER 33AT04-4D1FDD1D21A
GENERAL ELECTRIC 1 HP AF-300B AC DRIVE 6VAF343001B-
REBUILT ALLIS CHALMERS 20 HP VERTICAL PUMP MOTOR 326UP
SIEMENS SIMATIC S7 DP/PA COUPLER MODEL 6ES7 157-0AC82-0
MARSH ELECTRIC 1/2" STENCIL CUTTING MACHINE MODEL EH254
KONECRANES XN5 XN05050020M16S1C 1/2 TON CHAIN HOIST 460
GE 800 AMP 300 VDC POWER BREAKER AKR-2S-30-M-EC
BALDOR 15 HP ELECTRIC MOTOR 230/460 VAC 1760 RPM 25
HP Q3721A LASERJET 9050 LASERJET PRINTER HEWLETT PACKAR
WESTINGHOUSE COMMUNICATION MODULE CIRCUIT BOARD MOD
3 PHASE PERMANENT MAGNET MOTOR 600 VAC 1" DIA SHAFT
SQUARE D MHP36800 CIRCUIT BREAKER INTERRUPTER 800 AMP 6
BALDOR MT-4090-SPECIAL DC SERVO MOTOR 150 V DC 2200 RPM
CHROMALOX CIT-1619 240V SINGLE PHASE 5.0 KW CIT SO
BOSTON GEAR SPEED REDUCER FWC321800B56
SQUARE D I-LINE PANEL 200 AMP 10 CIRCUITS
WARNER ELECTRIC RAPIDTRAK LINEAR DRIVE 42" TR***EL 5
REBUILT LIGHTNIN AGITATOR GEAR REDUCER 17.3:1 RATIO
HARDY INSTRUMENTS W***ERS***ER C2 HI2151/20WC
GIDDINGS & LEWIS LOGIC I/O CIRCUIT BOARD 502-02734-50
ALLEN BRADLEY 1865SD64RA SERVO DRIVE MODULE
CUTLER HAMMER 600 AMP FUSIBLE SAFETY SWITCH DH366FGB
TEXAS INSTRUMENTS 500-5038 NETWORK INTERFACE MODULE 500
ALLEN BRADLEY MOTOR STARTER 509-EOD SERIES B SIZE 4
ALLEN BRADLEY DATA HIGHWAY II INTERFACE 1779-KP3
3/4" TEFLON DOUBLE DIAPHRAGM PUMP
DAY HART-CARTER ROTARY DUMP FEEDER VALVE
SQUARE D 200 AMP F DISCONNECT 4 POLE 2 PHASE H-464
CROUSE HINDS EXL21A HAZARDOUS LOCATION EXIT SIGN EXL SE
INDRAMAT SERVO DRIVE CONTROLLER TVM1.2-30-300-W0
GE FANUC IC693CPU340F CPU
WESTINGHOUSE PA32000F 2000 AMP CIRCUIT BREAKER MB
LAKEWOOD INSTRUMENTS 1575E SINGLE BOILER CONDUCTIVITY C
GENERAL SCANNING GALVANOMETER DRIVER BOARD 311-141141
CUTLER HAMMER 600 AMP TRIP UNIT HMA3600T 371D372G24
Enerpac Hydraulic Cylinder RD-256
SPIRAX SARCO SANITARY THERMOSTATIC STEAM TRAP BT6-BH
CHERRY BURRELL ACTUATED PLUG VALVE 2 INCH W6800343
THOMAS MICRON 12:1 PLANETARY GEARHEAD ATR014-012-SO
GENERAL ELECTRIC SPECTRA SERIES AMC3GM MODEL 1 CIRCUIT
ROSEMOUNT ANALYTICAL CONDUCTIVITY SENSOR 3081C
BENTLY NEVADA SNAPSHOT 2 44953-01
RELIANCE 57***35 AUTOMAX 7010 PROCESSOR 57435-K 57435-G
SQUARE D CIRCUIT BREAKER 300 AMP LIL36300
VALMET METSO PAPER SLITTER RADIAL CUTTING ARM
FANUC AC SERVO MOTOR A06B-0353-B831
ROSEMOUNT PRESSURE TRAN***ITTER 300S1AAK5M5 WITH C305121
SQUARE D PAF362000Z CIRCUIT BREAKER 800 AMP TRIP
RELIANCE 57***35A AUTOMAX 7010 PROCESSOR 0-57435-1
DRESSER SS 1" PRESSURE RELIEF VALVE 1906HC/L2-1
BALDOR ELECTRIC MOTOR 7.5 Hp 230 / 460 VAC 1760 RPM 213
REBUILT GUSHER VERTICAL CENTRIFUGAL PUMP CL 2X3-13S EL-
SQUARE D HJA36150 CIRCUIT BREAKER 150 AMP POWERPACT I L
WOODS 5 GROOVE V-BELT PULLEY SHE***E 31.5" 5V-31.5X5
ALLEN BRADLEY AC VFD 10 HP 1336S-B010-AN-EN
ALLEN BRADLEY AC VFD 10 HP 1336S-B010-AN-EN-GM1-HAP-L6
GE 50 AMP BREAKER BUS PLUG 480 VOLT 3 PHASE DE45ED4
IBS HUEHNE SEILLANGENGEBER WIRE ACTUATED ENCODER SG
SEW-EURODRIVE GEAR REDUCER TYPE R77AM132S/M 5.31 RA
VWR SCIENTIFIC HEATED WATER BATH WITH HOLDING TANK MODE
ABB ACS 500 AC DRIVE ACS501-0010-4-00P5 3PH 10 HP 14 AM