P0911VH

描述

程序：PLC指令的有序集合，PLC运行它，可进行相应的工作，当然，这里的程序是指PLC的用户程序。用户程序一般由用户设计，PLC的厂家或代销商不提供。用语句表达的程序不大直观，可读性差，特别是较复杂的程序，更难读，所以多数程序用梯形图表达。

梯形图：梯形图是通过连线把PLC指令的梯形图符号连接在一起的连通图，用以表达所使用的PLC指令及其前后顺序，它与电气原理图很相似。它的连线有两种：一为母线，另一为内部横竖线。内部横竖线把一个个梯形图符号指令连成一个指令组，这个指令组一般总是从装载（LD）指令开始，必要时再继以若干个输入指令（含LD指令），以建立逻辑条件。最后为输出类指令，实现输出控制，或为数据控制、流程控制、通讯处理、监控工作等指令，以进行相应的工作。母线是用来连接指令组的。下图是三菱公司的FX2N系列产品的最简单的梯形图例：

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》
​
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 5461-651 Analog Input-8 Channel 4-20 mA

Woodward 5461-652 CURRENT INPUT

Woodward 5461-653

Woodward 5461-654 8 Ch RTD/input

Woodward 5461-655

Woodward 5461-656

Woodward 5461-659 DISCREET MODULE

Woodward 5461-661 Current Output Isolated-507(8 Channel)

Woodward 5461-768 Speed Control

Woodward 5461-769 Speed Reference

Woodward 5461-770 Speed Control

Woodward 5461-771 Speed Reference

Woodward 5461-772 Temp Control

Woodward 5461-773 SW Mode

Woodward 5461-774 Freq.Control

Woodward 5461-775 Amb.Bias Ramp

Woodward 5461-776 Accel.Schedule

Woodward 5461-777 Decel.Jump Rate

Woodward 5461-778 Liq.Final Driver

Woodward 5461-779 Fuel Transfer Card/Board

Woodward 5461-780 Gas Final Driver

Woodward 5461-781 Synchonizer

Woodward 5461-798 N1 Speed Control

Woodward 5461-880 RTD

Woodward 5461-892

Woodward 5461-944 Speed Control

Woodward 5461-975 Power Supply DCS 2 LV

Woodward 5461-975 Power Supply DCS 2 LV

Woodward 5462-017 DCS DIGITAL SPD SENSOR

Woodward 5462-085 FINAL DRIVER

Woodward 5462-117 POS TRANSDUCER

Woodward 5462-236

Woodward 5462-244 Liq.Final Driver

Woodward 5462-268 Mother Board for 505

Woodward 5462-292 Speed Sensor

Woodward 5462-336 Speed SENSOR

Woodward 5462-338 Power Aux Card

Woodward 5462-443 Fuel Transfer Card/Board

Woodward 5462-472

Woodward 5462-482

Woodward 5462-518 Speed SENSOR

Woodward 5462-519 Speed Control

Woodward 5462-520 Speed Reference

Woodward 5462-521 Power Sensor

Woodward 5462-522 Power Control

Woodward 5462-523 Power Refernce

Woodward 5462-524 Extraction Control

Woodward 5462-525 Pressure Prefernce

Woodward 5462-526 Ratio Limiter

Woodward 5462-527 Valve Ramp

Woodward 5462-528 Final Driver

Woodward 5462-529 Valve Ramp

Woodward 5462-530 Final Driver

Woodward 5462-531 Auxiliary

Woodward 5462-532 Pressure Channel

Woodward 5462-533 Power Prefernce

Woodward 5462-578 High Volt P/S

Woodward 5462-581

Woodward 5462-584 DCS Motherboard

Woodward 5462-651 ANALOG 8CH 4-20MA INPUT

Woodward 5462-718 SPEED SENSOR

Woodward 5462-749 COPROCESSOR

Woodward 5462-750 SEC.POWER SUPPLY

Woodward 5462-753

Woodward 5462-756

Woodward 5462-757 DISCRETE INPUT

Woodward 5462-758 DISCRETE OUTPUT

Woodward 5462-762 SIO Card

Woodward 5462-893 CPU Card

Woodward 5462-896

Woodward 5462-916 FTC-DCS II

Woodward 5462-917

Woodward 5462-944 DPS3/DT

Woodward 5462-948 T/C Card-8 Channel

Woodward 5462-966 Speed Sensor/Analog In

Woodward 5463-033

Woodward 5463-034 POWER AUX.N.C.

Woodward 5463-089 CPU

Woodward 5463-120 cpu module

Woodward 5463-124 Sio

Woodward 5463-127 SIO

Woodward 5463-140 Master CPU

Woodward 5463-141 Master CO CPU

Woodward 5463-143 Aux Memory

Woodward 5463-154 MODULE ASSY-509 DISCREET I/O

Woodward 5463-178 CPU Card

Woodward 5463-190

Woodward 5463-191

Woodward 5463-193

Woodward 5463-306 CPU Interface

Woodward 5463-306 Interface Module

Woodward 5463-338 RTD Input

Woodward 5463-372 FINAL DRVR

Woodward 5463-373 Analog Input Position Fdbk

Woodward 5463-375 Analog Input Position Fdbk

Woodward 5463-384 Analog Output

Woodward 5463-388 8CH RTD A/I