描述

梯形圖的編程方式是指根據(jù)功能表圖設(shè)計(jì)出梯形圖的方法。為了適應(yīng)各廠家的PLC在編程元件、指令功能和表示方法上的差異，下面主要介紹使用通用指令的編程方式、以轉(zhuǎn)換為中心的編程方式、使用STL指令的編程方式和仿STL指令的編程方式。

為了便于分析，我們假設(shè)剛開始執(zhí)行用戶程序時(shí)，系統(tǒng)已處于初始步（用初始化脈沖M8002將初始步置位），代表其余各步的編程元件均為OFF，為轉(zhuǎn)換的實(shí)現(xiàn)做好了準(zhǔn)備。

1．使用通用指令的編程方式

編程時(shí)用輔助繼電器來代表步。某一步為活動(dòng)步時(shí)，對(duì)應(yīng)的輔助繼電器為“1”狀態(tài)，轉(zhuǎn)換實(shí)現(xiàn)時(shí)，該轉(zhuǎn)換的后續(xù)步變?yōu)榛顒?dòng)步。由于轉(zhuǎn)換條件大都是短信號(hào)，即它存在的時(shí)間比它激活的后續(xù)步為活動(dòng)步的時(shí)間短，因此應(yīng)使用有記憶（保持）功能的電路來控制代表步的輔助繼電器。屬于這類的電路有“起保停電路”和具有相同功能的使用SET、RST指令的電路。

歐美品牌停產(chǎn)的，常用的“PLC”備品備件

我司產(chǎn)品應(yīng)用于以下領(lǐng)域：

1,《發(fā)電廠DCS監(jiān)控系統(tǒng)》

2,《智能平鋼化爐系統(tǒng)制造》

3,《PLC可編程輸送控制系統(tǒng)》

4,《DCS集散控制系統(tǒng)》
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5,《智能型消防供水控制系統(tǒng)》

6,《化工廠藥液恒流量計(jì)算機(jī)控制系統(tǒng)》

7,《電氣控制系統(tǒng)》造紙,印染生產(chǎn)線,變電站綜合自動(dòng)化控制系列

本特利，英維思，伍德沃德，福克斯波羅、西屋、瑞恩、施耐德莫迪康、ABB、AB、西門子、摩托羅拉、GE發(fā)那科、安川、博世力士樂，ACSO，力士樂等各大品牌的DCS系統(tǒng)配件，機(jī)器人系統(tǒng)配件，大型伺服系統(tǒng)備件。

Woodward 5464-768 CPU-DCS II

Woodward 5464-827 CPU MODULE

Woodward 5464-828

Woodward 5464-829

Woodward 5464-830 A/I 4-20

Woodward 5464-833 4 ch

Woodward 5464-834

Woodward 5464-836 REMOTE XCVR

Woodward 5464-843 NetCon CPU Card

Woodward 5466-006 4-20mA Input

Woodward 5466-017 2 CH ACTUATOR DRIVER

Woodward 5466-026 DUPLEX CUR IN

Woodward 5466-031 Netcon I/O Controller?????

Woodward 5466-032 FTIO MODULE

Woodward 5466-033 CPU Module

Woodward 5466-041 2C Pos Control

Woodward 5466-042 CPU(GAP Compatible)-DCS

Woodward 5466-061 Module Master CPU

Woodward 5466-063 NetCon CPU Card

Woodward 5466-074 CPU Mod

Woodward 5466-250 netcon B FTIO

Woodward 5466-253 MPU A I/O

Woodward 5466-258 NetCon/MicroNet Discreet I/O Card 24/12

Woodward 5466-268

Woodward 5466-272 Solnd Mon

Woodward 5466-274 FTIO

Woodward 5466-315 NetCon/MicroNet Analog I/O Card

Woodward 5466-316 MPU A I/O

Woodward 5466-332 ANALOG I/O 24/8

Woodward 5466-336 SIO

Woodward 5466-340 Netcon F/O XCVR

Woodward 5466-348 Netcon 5000B SIO

Woodward 5466-351 Netcon CPU 040 with LLC Memory

Woodward 5466-352 CPU Module

Woodward 5466-353 MAIN XCVR

Woodward 5466-355 REMOTE XCVR

Woodward 5466-409 NetCon/MicroNet CPU Card

Woodward 5466-411 Ethernet Module(RJ45)

Woodward 5466-419 NT CPU

Woodward 5466-425 24/8A I/O

Woodward 5466-458

Woodward 5500-018

Woodward 5500-134 Ext.Card

Woodward 5500-159C 505 Relay Board

Woodward 5500-510

Woodward 5500-559 Buffer Board

Woodward 5500-563

Woodward 5501-003 Circuit Board for Peak 150

Woodward 5501-340

Woodward 5501-341

Woodward 5501-367 FTM(Field Termination)

Woodward 5501-376 FTM,ANALOG,HI DENS

Woodward 5501-411

Woodward 5501-428 2 CH ACTUATOR DRIVER

Woodward 5501-432 2 CH ACTUATOR DRIVER

Woodward 5501-465

Woodward 5501-466 MicroNet Power Supply

Woodward 5501-469 CPU LM6000 PC&PA

Woodward 5501-470 CPU_040 W/O LL?Memory??

Woodward 5501-471 NetCon/MicroNet SIO Card

Woodward 5501-510 FT Relay

Woodward 5503-173 MicroNet VME CPU Adapter

Woodward 5503-279 TC/RTD

Woodward 5503-282 FTM,analog

Woodward 5503-335 CPU

Woodward 6945-377 3103 Gas Fuel Valve

Woodward 8200-015 Peak 150(HVAC-No ModBus)

Woodward 8200-019 PEAK 150

Woodward 8200-177 DRIVER,EM DIGITAL/ANALOG

Woodward 8200-203 ProTech 203

Woodward 8200-226 SPC(servo position controller)

Woodward 8200-314 GS/LQ Digital Driver

Woodward 8220-805 Final Driver

Woodward 8226-043 OCP(operator control panel)

Woodward 8230-568 Control Panel

Woodward 8230-805 FINAL DRVR

Woodward 8230-815 HP Final Drive

Woodward 8230-827 LP Final Driver

Woodward 8230-840

Woodward 8230-841

Woodward 8230-896 Final Driver-Water

Woodward 8230-898 FINAL DRVR

Woodward 8234-167O 501 Chassie

Woodward 8234-213 Chassis-NetCon A

Woodward 8234-346A 501 Chassie

Woodward 8236-026

Woodward 8236-027 Operate Control Panel

Woodward 8236-039 OCP(operator control panel)

Woodward 8236-039 OCP(operator control panel)