https://forge.codesys.com/forge/talk/CODESYS-V2/thread/c7588e45c7/2020-02-27T20:07:16.682000ZRecent posts to I'm losing physical button pushdowns2020-02-27T20:07:16.682000Z2020-02-27T20:07:16.682000ZRalph Holzhttps://forge.codesys.com/u/ralph-holz/https://forge.codesys.comf9a4253c8f8c1c1d51135f9c663d1a8a3e82c45b

<div class="markdown_content"><p>To get an real idea its necessary to get more information. Wich PLC is used and if you which CanOpen stack. What's your cycletime.</p> <p>By the way did you build a real loop inside your program. If So it is quite nore to get no reaktion of your input. Physical in and outputs (also In/Out on Can) are mapped to the so called Process Image. This Process image is refresched every beginn of the PLC Cycle in an outer loop. So if you bild a loop you never reach this refreshing.</p> <p>Regards </p> <p>Ralph</p></div>

2020-02-27T20:07:12.953000Z2020-02-27T20:07:12.953000Zlagu2653https://forge.codesys.com/u/lagu2653/https://forge.codesys.comf0cb8c74e3c32c528b4dfa55780d9a745cc0b98f

<div class="markdown_content"><p>I've got a hardware-button connected to a CANOpen-slave which sends messages when the button is pressed asynchronously. In my master PLC application I have a loop polling to see whether the button bit-value has the value true or false. (It's bit number 4 of the first data byte in the frame with ID: 0x290) </p> <div class="codehilite"><pre><span></span> <span class="nv">Clearly</span> <span class="nv">this</span> <span class="nv">is</span> <span class="nv">not</span> <span class="nv">how</span> <span class="nv">it</span> <span class="nv">should</span> <span class="nv">be</span> <span class="nv">done</span>. <span class="nv">It</span> <span class="nv">should</span> <span class="nv">be</span> <span class="nv">associated</span> <span class="nv">to</span> <span class="nv">an</span> <span class="nv">asynchronous</span> <span class="nv">interrupt</span>. <span class="nv">How</span> <span class="k">do</span> <span class="nv">you</span> <span class="nv">fire</span> <span class="nv">an</span> <span class="nv">interrupt</span> <span class="nv">when</span> <span class="nv">frame</span> <span class="mi">0</span><span class="nv">x290</span> <span class="nv">arrives</span> <span class="nv">with</span> <span class="nv">the</span> <span class="nv">databit</span> <span class="nv">set</span> <span class="nv">to</span> <span class="nv">TRUE</span> <span class="nv">in</span> <span class="nv">CoDeSys</span>? <span class="nv">I</span> <span class="nv">work</span> <span class="nv">mostly</span> <span class="nv">in</span> <span class="nv">Structured</span> <span class="nv">Text</span> <span class="nv">and</span> <span class="nv">VISU</span>. </pre></div> </div>