Recent posts to Indirect address on a %IWhttps://forge.codesys.com/forge/talk/Engineering/thread/793d767454/2020-04-15T12:47:02.260000ZRecent posts to Indirect address on a %IWIndirect address on a %IW2020-04-15T12:47:02.260000Z2020-04-15T12:47:02.260000Zbertrand42https://forge.codesys.com/u/bertrand42/https://forge.codesys.comdf705bba141b581aeeff98eb79d1026bdeaa1321<div class="markdown_content"><p>I created an FB with enter a pointer on an address %IW (that's why I use adr (%IW400)). I want to collect the values of %IW400 a %IW845 in an integer table</p></div>Indirect address on a %IW2020-04-15T12:11:16.783000Z2020-04-15T12:11:16.783000Zi-campbellhttps://forge.codesys.com/u/i-campbell/https://forge.codesys.com0a6f29ad8988cbd1dd819c5ad01f248ba313ca01<div class="markdown_content"><p>I am lost. What are you trying to do?</p></div>Indirect address on a %IW2020-04-15T12:07:37.857000Z2020-04-15T12:07:37.857000Zbertrand42https://forge.codesys.com/u/bertrand42/https://forge.codesys.comfd04ca262d40a2750bd0e983fa2d70739b2e44a5<div class="markdown_content"><p>yes the %IW400 is 446 length UINT, the pb is not the length, my first post indicates my problem</p></div>Indirect address on a %IW2020-04-15T11:59:45.265000Z2020-04-15T11:59:45.265000Zi-campbellhttps://forge.codesys.com/u/i-campbell/https://forge.codesys.combd2bb2b9160c89849e33d4d6b3eefab71cda50bc<div class="markdown_content"><p>All you need is:</p>
<p>Tab AT %IW400 : ARRAY<span>[0..445]</span> OF UINT;</p></div>Indirect address on a %IW2020-04-15T09:49:24.419000Z2020-04-15T09:49:24.419000Zbertrand42https://forge.codesys.com/u/bertrand42/https://forge.codesys.com7b2f1b60cf34391111ae6ec4a5ef6f2d6ac601e6<div class="markdown_content"><p>Thanks for your answer,</p>
<p>Does that mean I have to concat the data from two pointing addresses and put them in an int? </p>
<p>And in my previous example what is the value of the second word?</p></div>Indirect address on a %IW2020-04-15T09:19:16.369000Z2020-04-15T09:19:16.369000Zi-campbellhttps://forge.codesys.com/u/i-campbell/https://forge.codesys.come98457aff85ec7774ab8c97767e3bd4c5a727d4a<div class="markdown_content"><p>Pointers are in bytes, so you will have to add 2 * IIdxIn.</p></div>Indirect address on a %IW2020-04-15T08:49:19.051000Z2020-04-15T08:49:19.051000Zbertrand42https://forge.codesys.com/u/bertrand42/https://forge.codesys.comd4d003889c129d05be9d247d0d21a5ebfda3c0c7<div class="markdown_content"><p>FOR IIdx_IN := 0 TO 100 BY 1 DO<br/>
APtrBCmdIn<span>[IIdx_IN]</span> := PtrAL_InData + IIdx_IN ;<br/>
PtrBSrc := APtrBCmdIn<span>[IIdx_IN]</span>;</p>
<div class="codehilite"><pre><span></span><span class="n">Tab</span><span class="o">[</span><span class="n">IIdx_IN</span><span class="o">]</span><span class="err">:</span><span class="o">=</span><span class="n">PtrBSrc</span><span class="o">^</span><span class="p">;</span><span class="w"></span>
</pre></div>
<p>END_FOR</p>
<p>Declaration APtrBCmdIn: ARRAY<span>[0.445]</span> OF POINTER TO UINT; <br/>
Tab: ARRAY<span>[0..445]</span> OF UINT;<br/>
PtrAL_InData : POINTER TO UINT; // pointer to start address %IW -> ex: adr(%IW400)<br/>
IIdx_IN : BYTE; // index</p>
<p>My problem is that in the tab the values are informed both words......</p>
<p>That is to say, first word of tab the value is correct, second word the value is not that expected, Third word value expected to the second word etc.</p>
<p>Thank you for your help</p>
<p>BR</p></div>