在工業(yè)生產(chǎn)過(guò)程當(dāng)中,存在一些如溫度、壓力、流量、液位和速度等連續(xù)變化的量(即模擬量),PLC采用相應(yīng)的A/D和D/A轉(zhuǎn)換模塊及各種各樣的控制算法程序來(lái)處理模擬量,完成閉環(huán)控制。PID調(diào)節(jié)是一般閉環(huán)控制系統(tǒng)中用得較多的一種調(diào)節(jié)方法。過(guò)程控制在冶金、化工、熱處理、鍋爐控制等場(chǎng)合有非常廣泛的應(yīng)用。
Providing 4 words of analog input data the GE Versamax IC200ALG432 receives 2 words of analog output data. The GE Versamax IC200ALG432 is an analog mixed module, 12 bit +/-10vdc input 4 channels and output 2 channels. The GE Versamax provides four -10 to +10vdc analog inputs and two -10 to +10vdc analog outputs.
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