P0911YT

描述

当PLC运行时，CPU就要执行用户程序中的操作。但是CPU不可能同时执行多个操作，只能分时地一个操作一个操作地执行。PLC利用系统软件在其内部建立了输入输出映像区，当PLC的CPU执行用户程序时，从输入映像区中读取输入信号的状态，进行相应的操作。当CPU执行完第一个操作后，将操作结果输出到输出映像区，然后再执行第二个操作，操作结果送到输出映像区。在程序执行过程中，PLC并不读取输入信号的真正状态，执行结果也并没有输出到PLC外部。只有当程序执行到结束指令（END）时，将输出映像区中执行结果向PLC外部输出一次，将输入信号的状态读取一次送到输入映像区。对输入输出信号的这一操作过程称为I/O刷新。I/O刷新完成后，CPU再从用户程序的第一条指令开始，进行下一次程序执行。PLC的这种工作方式被称为扫描方式。

PLC的扫描周期包括上电后初始处理、共同处理、上位链接服务、外设服务、运算处理、I/O刷新。

欧美品牌停产的，常用的“PLC”备品备件

我司产品应用于以下领域：

1,《发电厂DCS监控系统》

2,《智能平钢化炉系统制造》

3,《PLC可编程输送控制系统》

4,《DCS集散控制系统》
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5,《智能型消防供水控制系统》

6,《化工厂药液恒流量计算机控制系统》

7,《电气控制系统》造纸,印染生产线,变电站综合自动化控制系列

本特利，英维思，伍德沃德，福克斯波罗、西屋、瑞恩、施耐德莫迪康、ABB、AB、西门子、摩托罗拉、GE发那科、安川、博世力士乐，ACSO，力士乐等各大品牌的DCS系统配件，机器人系统配件，大型伺服系统备件。

Woodward 5463-393 Analog Input-4-20 mA

Woodward 5463-396 Thermocouple Input

Woodward 5463-397 A/I T/C

Woodward 5463-400 DISCREET OUT

Woodward 5463-405 Discrete Input

Woodward 5463-406 Discrete Output-28 Channel

Woodward 5463-408 4CH MLTFN A/I

Woodward 5463-410 Speed Input

Woodward 5463-428 SIO MODULE

Woodward 5463-431 A/I RTD

Woodward 5463-432 Remote Transceiver

Woodward 5463-436 INTERFACE

Woodward 5463-436 NetCon Interface

Woodward 5463-450 CPU

Woodward 5463-473 VER4.4 SIO OPSYS

Woodward 5463-474 CPU MODULE

Woodward 5463-482 Analog Output(4-20 mA)-DCS II

Woodward 5463-531

Woodward 5463-561 Circuit Board

Woodward 5463-579 FC109 Master Co-Proc

Woodward 5463-581 8CH ISOL 4-20MA INPUT

Woodward 5463-582 8 CHANNEL ISOL ANALOG 0-5V

Woodward 5463-583 8 CH ISOL 0-10V INPUT

Woodward 5463-598 AUX MEMORY(converted from 5462-981)

Woodward 5463-600 AUX MEMORY(converted from 5462-981)

Woodward 5463-602 AUX MEMORY(converted from 5462-981)

Woodward 5463-631 CPU MODULE

Woodward 5463-716 SIO MODULE

Woodward 5463-729 LVDT POS TRANSDUCER

Woodward 5463-750 CPU Connection

Woodward 5463-758 CPU

Woodward 5463-779 Remote Receiver Netcon5000

Woodward 5463-780 NetCon 5000 Remote XCVR

Woodward 5463-781 Aux CPU

Woodward 5463-783 NetCon Discreet Input Card

Woodward 5463-785 NetCon Isolated 4-20 Analog Input Card

Woodward 5463-786 NetCon Analog Output 8 channel Card

Woodward 5463-787

Woodward 5463-790 SIO

Woodward 5463-796 netcon module

Woodward 5463-834

Woodward 5463-870 2C Act Driver

Woodward 5463-873 DISCRETE OUTPUT

Woodward 5463-877 NetCon Actuator Driver Card

Woodward 5463-880 netcon module

Woodward 5463-880 netcon module

Woodward 5463-881 Cpu

Woodward 5463-887 NetCon Isolated Thermocouple Input Card

Woodward 5464-015 SPEED SENSOR

Woodward 5464-017 SPEED SENSOR

Woodward 5464-018 DIG SPEED

Woodward 5464-021 SIO

Woodward 5464-024 CPU Card

Woodward 5464-025 MODULE ASSY-SIO OP SYS 4.6,REV.A

Woodward 5464-033 F/O XCVR

Woodward 5464-034

Woodward 5464-050 Master CPU SQ109

Woodward 5464-114

Woodward 5464-205 NetCon Semi-Isolated RTD Input Card

Woodward 5464-206 Voltage Input(0-5 VDC)

Woodward 5464-210 2 CH ACTUATOR DRIVER

Woodward 5464-213 NetCon Serial Input Output Card

Woodward 5464-218 DISCRETE INPUT

Woodward 5464-223 DISCRETE INPUT

Woodward 5464-243 MODULE ASSY-MASTER CPU,REV.A

Woodward 5464-275

Woodward 5464-301 CPU

Woodward 5464-330 EtherNet

Woodward 5464-331 NetCon FT Kernal PS

Woodward 5464-332 ISO T/C

Woodward 5464-333 ISOL T/C FH

Woodward 5464-334 ISO 4-20 analog input

Woodward 5464-334

Woodward 5464-335

Woodward 5464-337 100 OHM RTD

Woodward 5464-337 RTD 100

Woodward 5464-340

Woodward 5464-348 DRIVER/MPU MODULE

Woodward 5464-414 NetCon Digital Speed Sensor Card

Woodward 5464-428 A/I 4-20

Woodward 5464-439

Woodward 5464-444 NetCon CPU Card

Woodward 5464-458 NetCon Discreet Output 64 Channel Card

Woodward 5464-472

Woodward 5464-473 NetCon Fiber Optic Transceiver Card

Woodward 5464-474 Discrete Input-DCS II

Woodward 5464-485 Module Master CPU

Woodward 5464-536

Woodward 5464-538

Woodward 5464-541

Woodward 5464-542 POSSIBLY FTIO

Woodward 5464-549

Woodward 5464-550 2C Act Driver

Woodward 5464-554 2C Act Driver

Woodward 5464-555 2C Act Driver

Woodward 5464-596

Woodward 5464-643 DI MODULE

Woodward 5464-645 2C Act Driver

Woodward 5464-646 2C Act Driver

Woodward 5464-647 2 ch actuator driver

Woodward 5464-653

Woodward 5464-654 64 CH DISCREET OUTPUT

Woodward 5464-655 4 Chan P Driver

Woodward 5464-658 MPU 4 CH

Woodward 5464-660 Module 4-20MA input

Woodward 5464-661

Woodward 5464-674 Module DCS Ver 7.X SIO

Woodward 5464-674 Module DCS Ver 7.X SIO

Woodward 5464-676 XCVR

Woodward 5464-688 Linknet Controller Module

Woodward 5464-697 CPU Module

Woodward 5464-716A SIO Card(Version 4.6)

Woodward 5464-725 replaced by 5437-523

Woodward 5464-726 replaced by 5437-524

Woodward 5464-727 replace by 5437-419 or 5437-687