https://forge.codesys.com/forge/talk/CODESYS-V2/thread/4a2cb0c672/2020-02-27T21:44:04.166000ZRecent posts to One time execution in ST code2020-02-27T21:44:04.166000Z2020-02-27T21:44:04.166000Zshooterhttps://forge.codesys.com/u/shooter/https://forge.codesys.com3b1c964bb53db34e55dab3005a4b941e4b7973d1

<div class="markdown_content"><p>if (once=false) then<br/> once:=true;<br/> if b=1 then<br/> and rest of instructions.<br/> else<br/> end_if<br/> end_if</p></div>

2020-02-27T21:44:00.026000Z2020-02-27T21:44:00.026000Zmanantrivedi77https://forge.codesys.com/u/manantrivedi77/https://forge.codesys.coma047a056965490be1e24e8e85f246e2cc38113e5

<div class="markdown_content"><p>Hi,</p> <p>In a ST, how can I run some part of code only once?</p> <p>In below example I need to run some part of the code ( commented with (<em> only once</em>)) only once.</p> <p>IF a=1 Then</p> <p>IF b=1 THEN (<em> only once</em>)<br/> c=1 (<em> only once</em>)<br/> ELSEIF b=2 THEN (<em> only once</em>)<br/> c=2 (<em> only once</em>)<br/> END_IF</p> <div class="codehilite"><pre><span></span><span class="k">CASE</span> <span class="k">c</span> <span class="k">OF</span> <span class="mi">1</span><span class="p">:</span> <span class="p">........</span> <span class="p">........</span> <span class="mi">2</span><span class="p">:</span> <span class="p">.........</span> <span class="p">.........</span> </pre></div> <p>END_IF</p></div>