描述
梯形圖的編程方式是指根據(jù)功能表圖設(shè)計出梯形圖的方法。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,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)換的實現(xiàn)做好了準備。
1.使用通用指令的編程方式
編程時用輔助繼電器來代表步。某一步為活動步時,對應(yīng)的輔助繼電器為“1”狀態(tài),轉(zhuǎn)換實現(xiàn)時,該轉(zhuǎn)換的后續(xù)步變?yōu)榛顒硬?。由于轉(zhuǎn)換條件大都是短信號,即它存在的時間比它激活的后續(xù)步為活動步的時間短,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算機控制系統(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)














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