IC693CPU372 IC693CPU372
參考價(jià) | ¥ 1000 |
訂貨量 | ≥1 |
- 公司名稱 廈門(mén)慧星貿(mào)易有限公司
- 品牌
- 型號(hào) IC693CPU372
- 產(chǎn)地 美國(guó)
- 廠商性質(zhì) 經(jīng)銷商
- 更新時(shí)間 2015/6/17 10:16:22
- 訪問(wèn)次數(shù) 300
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IC693CPU372 CPU372 Plus Web Enabled Controller. Embedded 10/100MBS Ethernet with Built-In Switch. 120K Bytes Configurable User Memory. IC693CPU372輸入信號(hào)來(lái)源復(fù)雜,且PC的動(dòng)作響應(yīng)時(shí)間遠(yuǎn)遠(yuǎn)短于繼電接觸控制系統(tǒng)的響應(yīng)時(shí)間,因而在繼電接觸控制系統(tǒng)中不太引人注意的觸點(diǎn)瞬間跳動(dòng)問(wèn)題(如,干簧繼電器觸頭的彈跳抖動(dòng)、觸頭接觸不良或觸頭彈簧壓力過(guò)低出現(xiàn)“打火”、繼電器線圈電壓波動(dòng)、周圍電磁場(chǎng)干擾、環(huán)境中機(jī)械振動(dòng)的影響等)將會(huì)在PC集中控制系統(tǒng)中產(chǎn)生誤操作,加之PC供電電源采用隔離變壓器隔離,I, O(輸入、輸出)連線采用屏蔽方式和走線分開(kāi)等措施只能限制強(qiáng)電對(duì)PC的I, O信號(hào)的干擾,為此我在程序中加入干擾濾除子程序,見(jiàn)圖3。圖中TIM00用于消除0104接點(diǎn)斷開(kāi)時(shí),因機(jī)械振動(dòng)影響出現(xiàn)的瞬間閉合;
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