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<p class="MsoNormal"><span lang="EN-US">Hi team:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> I have a question regarding stepwise configuration on pid-control.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> I have mine setup like below. <o:p>
</o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> {<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> "name": "Ambient_Temp",<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> "type": "stepwise",<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> "setpoint": 0.0,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> "inputs": ["Ambient_Temp"],<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> "pid": {<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> "samplePeriod": 1.0,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> "positiveHysteresis": 0.0,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> "negativeHysteresis": 0.0,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> "isCeiling": false,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> "reading": {<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> "0": 25,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> "1": 30,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> "2": 35<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> },<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> "output": {<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> "0": 15,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> "1": 15,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> "2": 15<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> }<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> }<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> }<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> And, I would like to know the meaning of each field, as far as I understand from phosphor-pid-control, “setpoint” seems not used if PID type is stepwise. Is that true? The “reading” field indicates the temperature
reading from the sensor “Ambient”. The “output” field should indicate the duty % corresponding to the fans, or should output be RPMs? That gives me when a reading of 25 degree(whatever the unit is), the output duty of fans should set to 15%, or set to corresponding
RPMs. <o:p></o:p></span></p>
<p class="MsoNormal" style="text-indent:24.0pt"><span lang="EN-US">Do I understand the fields correctly?<o:p></o:p></span></p>
<p class="MsoNormal" style="text-indent:24.0pt"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Thank you,<o:p></o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#404040">Derek Lin</span></b><span lang="EN-US" style="font-family:"新細明體",serif"><br>
</span><span lang="EN-US" style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#404040">Sr. BMC Engineer</span><span lang="EN-US" style="font-family:"新細明體",serif"><br>
</span><span lang="EN-US" style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#404040">8F,66, San Chong Rd., Nankang Software Park, Taipei. </span><span lang="EN-US" style="font-family:"新細明體",serif"><br>
</span><span lang="EN-US" style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#404040">Lenovo Taiwan</span><span lang="EN-US" style="font-family:"新細明體",serif"><o:p></o:p></span></p>
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