https://forge.codesys.com/forge/talk/CODESYS-V2/thread/cea5edda01/2020-02-27T19:52:12.598000ZRecent posts to Wago 750-841 vs MW4096 and above2020-02-27T19:52:12.598000Z2020-02-27T19:52:12.598000Zshooterhttps://forge.codesys.com/u/shooter/https://forge.codesys.com6a22a8c10b356224234164ee397228e9e829a75d

<div class="markdown_content"><p>will try but first i would say no not this way.</p></div>

2020-02-27T19:52:08.992000Z2020-02-27T19:52:08.992000Zjohndoehttps://forge.codesys.com/u/johndoe/https://forge.codesys.comee30ee482b0d0bd7a6981bfbb8776e3816b31603

<div class="markdown_content"><p>Hi,<br/> on a Wago 750-841 PLC, I need to access MW4096 and above both via Modbus and via PLC.<br/> In a factory default PLC, trying to define a variable like this</p> <div class="codehilite"><pre><span></span><span class="nt">mw4096</span> <span class="nt">AT</span> <span class="o">%</span><span class="nt">MW4096</span><span class="o">:</span> <span class="nt">WORD</span><span class="o">;</span> </pre></div> <p>I obtain the error <strong>Invalid address: '%MW4096'</strong>.</p> <p>The only solution I found is to change memory layout of PLC in this way:<br/> So, NOVRAM size is still 24 kB (0x4000 + 0x2000), but flags area grows from 8 kB to 16 kB (0x2000 -&gt; 0x4000) and retain area decreases from 16 kB to 8 kB.<br/> Now I can access both via Modbus and via PLC up to MW8191.</p> <p>Is this procedure correct? Are settings right?</p> <p>Thanks</p></div>