https://forge.codesys.com/forge/talk/CODESYS-V2/thread/9a2da7c8fd/2022-08-31T11:51:16.999000ZRecent posts to Number Changing Detector Function Block2022-08-31T11:51:16.999000Z2022-08-31T11:51:16.999000Zsugurhttps://forge.codesys.com/u/sugur/https://forge.codesys.com903dfbd0b106194a2e681b67715e16c31c9f11c8

<div class="markdown_content"><p>Wow! That was easy. Thank you.</p></div>

2022-08-31T09:52:10.369000Z2022-08-31T09:52:10.369000Zsgronchihttps://forge.codesys.com/u/sgronchi/https://forge.codesys.com3e5542386cd746f0a10ac9c2aa5210420491b809

<div class="markdown_content"><p>Perhaps you can find it in OSCAT, not in the standard libraries.<br/> Anyway...</p> <div class="codehilite"><pre><span></span><span class="n">FUNCTION_BLOCK</span> <span class="n">InputChangeMonitor_WORD</span> <span class="n">VAR_INPUT</span> <span class="n">i_Value</span> <span class="p">:</span> <span class="n">WORD</span><span class="p">;</span> <span class="n">END_VAR</span> <span class="n">VAR_OUTPUT</span> <span class="n">o_Changed</span> <span class="p">:</span> <span class="n">BOOL</span><span class="p">;</span> <span class="n">END_VAR</span> <span class="n">VAR</span> <span class="n">old_Value</span> <span class="p">:</span> <span class="n">WORD</span><span class="p">;</span> <span class="n">END_VAR</span> <span class="n">o_Changed</span> <span class="p">:</span><span class="o">=</span> <span class="n">i_Value</span> <span class="o">&lt;&gt;</span> <span class="n">old_Value</span><span class="p">;</span> <span class="n">i_Value</span> <span class="p">:</span><span class="o">=</span> <span class="n">old_Value</span><span class="p">;</span> </pre></div> <p>And with threshold</p> <div class="codehilite"><pre><span></span><span class="n">FUNCTION_BLOCK</span> <span class="n">InputChangeMonitorThresholded_WORD</span> <span class="n">VAR_INPUT</span> <span class="n">i_Value</span> <span class="p">:</span> <span class="n">WORD</span><span class="p">;</span> <span class="n">i_Threshold</span> <span class="p">:</span> <span class="n">WORD</span><span class="p">;</span> <span class="n">END_VAR</span> <span class="n">VAR_OUTPUT</span> <span class="n">o_Changed</span> <span class="p">:</span> <span class="n">BOOL</span><span class="p">;</span> <span class="n">END_VAR</span> <span class="n">VAR</span> <span class="n">old_Value</span> <span class="p">:</span> <span class="n">WORD</span><span class="p">;</span> <span class="n">END_VAR</span> <span class="k">IF</span> <span class="n">i_Value</span> <span class="o">&gt;</span> <span class="n">old_Value</span> <span class="k">THEN</span> <span class="n">o_Changed</span> <span class="p">:</span><span class="o">=</span> <span class="n">i_Value</span> <span class="o">-</span> <span class="n">old_Value</span> <span class="o">&gt;</span> <span class="n">i_Threshold</span><span class="p">;</span> <span class="k">ELSE</span> <span class="n">o_Changed</span> <span class="p">:</span><span class="o">=</span> <span class="n">old_Value</span> <span class="o">-</span> <span class="n">i_Value</span> <span class="o">&gt;</span> <span class="n">i_Threshold</span><span class="p">;</span> <span class="n">END_IF</span> <span class="k">IF</span> <span class="n">o_Changed</span> <span class="k">THEN</span> <span class="n">i_Value</span> <span class="p">:</span><span class="o">=</span> <span class="n">old_Value</span><span class="p">;</span> <span class="n">END_IF</span> </pre></div> <p>Just change WORD to INT everywhere if you need to.</p></div>

2022-08-31T08:03:32.956000Z2022-08-31T08:03:32.956000Zsugurhttps://forge.codesys.com/u/sugur/https://forge.codesys.coma3629122afc0b83c56411e4a03d04e1a5d713f58

<div class="markdown_content"><p>I need a function block which detects any changing of the input (of INT, WORD). I believe that there is already such a function block in the present libraries.</p></div>