描述

PLC控制系統(tǒng)在使用過(guò)程中,經(jīng)常要修改一些參數(shù),最常見的就是修改定時(shí)器的設(shè)定值.為了操作員方便修改定時(shí)器的設(shè)定值,可用下列方法來(lái)實(shí)現(xiàn)：1、使用人機(jī)界面PLC可以用觸摸屏、文本顯示器或工控機(jī)作人機(jī)界面,方便修改定時(shí)器參數(shù),但成本較高.2、使用PLC內(nèi)置的模擬電位器小型PLC一般都有內(nèi)置的設(shè)置參數(shù)用的模擬電位器.如三菱PLCFX1N、FX1S的外部調(diào)節(jié)寄存器D8030和D8031的值與模擬電位器的位置相對(duì)應(yīng).S7-200的兩個(gè)模擬電位器對(duì)應(yīng)的寄存器是SMB28和SMB29.CP1H的模擬電位器對(duì)應(yīng)的寄存器A642.3、用模擬量設(shè)定功能擴(kuò)展板修改定時(shí)器的設(shè)定值三菱FX系列的模擬量設(shè)定功能擴(kuò)展板FX2N-8AV-BD上有8個(gè)電位器,可以用應(yīng)用指令VRRD讀出各電位器設(shè)定的8位二進(jìn)制數(shù),用定作定時(shí)器、計(jì)數(shù)器的設(shè)定值.4、用PLC外部觸點(diǎn)在程序內(nèi)作加減計(jì)數(shù)器實(shí)現(xiàn)設(shè)定定時(shí)器的設(shè)定值用按鈕的上升沿與加減計(jì)數(shù)器實(shí)現(xiàn).當(dāng)按下按鈕,加減計(jì)數(shù)器的寄存器加1或減1.而定時(shí)器的設(shè)定值就是寄存器中的數(shù)值.根據(jù)需要與定時(shí)器的基時(shí)要確定按下的次數(shù).加計(jì)數(shù)與減計(jì)數(shù)的外部接點(diǎn)要分開.5、增加LCD選件板改變PLC內(nèi)部定時(shí)器的設(shè)定值.可以方便的監(jiān)控、變更永宏P(guān)LC內(nèi)數(shù)據(jù)值,并可以實(shí)現(xiàn)錯(cuò)誤狀態(tài)的可視化.歐姆龍CP1H、CP1L的PLC可以增加LCD選件板CP1W-DAM01.

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主營(yíng)：世界知名品牌的PLC、DCS系統(tǒng)備件模塊

①Allen-Bradley(美國(guó)AB)系列產(chǎn)品》

②Schneider(施耐德電氣)系列產(chǎn)品》

③General electric(通用電氣)系列產(chǎn)品》

④Westinghouse（美國(guó)西屋）系列產(chǎn)品》

⑤SIEMENS(西門子系列產(chǎn)品)》

⑥銷售ABB Robots.FANUC Robots、YASKAWA Robots、KUKA Robots、Mitsubishi Robots、OTC Robots、PanasonicRobots、MOTOMAN Robots。

⑦estinghouse（西屋）：OVATION系統(tǒng)、WDPF系統(tǒng)、MAX1000系統(tǒng)備件。

⑧Invensys Foxboro（?？怂共_）：I/A Series系統(tǒng)，F(xiàn)BM（現(xiàn)場(chǎng)輸入/輸出模塊）

順序控制、梯形邏輯控制、事故追憶處理、數(shù)模轉(zhuǎn)換、輸入/輸出信號(hào)處理、數(shù)

據(jù)通信及處理等。Invensys Triconex:冗余容錯(cuò)控制系統(tǒng)、基于三重模件冗余（TMR）

結(jié)構(gòu)的zui現(xiàn)代化的容錯(cuò)控制器。

⑨Siemens(西門子)：Siemens MOORE，Siemens Simatic C1，Siemens數(shù)控系統(tǒng)等。

⑩Bosch Rexroth（博世力士樂(lè)）：Indramat，I/O模塊,PLC控制器,驅(qū)動(dòng)模塊等。

◆Motorola（摩托羅拉）：MVME 162、MVME 167、MVME1772、MVME177等系列。

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