https://forge.codesys.com/forge/talk/Engineering/thread/4881cfaca4/2020-02-27T14:21:06.929000ZRecent posts to Bits zählen über Modbus TCP2020-02-27T14:21:06.929000Z2020-02-27T14:21:06.929000ZCodesysAmhttps://forge.codesys.com/u/codesysam/https://forge.codesys.com4c3dc2c0fa2d4f1a1850ee202d0340234f88de71

<div class="markdown_content"><p>Dear scott_cunningham,</p> <p>first iam very sorry for the wrong post in the wrong forum.<br/> Your solution works well ! </p> <p>Thank you very much.</p></div>

2020-02-27T14:21:06.529000Z2020-02-27T14:21:06.529000ZdFxhttps://forge.codesys.com/u/dfx/https://forge.codesys.com8858914aa6e7d1569f257488792f2bc45b4596ac

<div class="markdown_content"><p>mybad.</p> <p>I beg your slice is the best solution as of now.</p></div>

2020-02-27T14:21:06.119000Z2020-02-27T14:21:06.119000ZAnonymoushttps://forge.codesys.com/u/*anonymous/https://forge.codesys.com469d7316fec07d5ac286f5aa09748d830f0c0cb6

<div class="markdown_content"><p><em>Originally created by:</em> scott_cunningham</p> <p>@ dFx - I don't see how your code can compile/work.</p> <p>BIT can only be used in structure, not array:</p> <p>At least through CoDeSys 3.5.12, help states BIT datatype can only be used with STRUCTUREs.</p> <p><img alt="IMG: array" rel="nofollow" src="https://forum.codesys.com//download/file.php?id=4396"/></p> <p><img alt="IMG: bit" rel="nofollow" src="https://forum.codesys.com//download/file.php?id=4398"/></p></div>

2020-02-27T14:21:05.715000Z2020-02-27T14:21:05.715000ZdFxhttps://forge.codesys.com/u/dfx/https://forge.codesys.com89d414277f1e5eae169274df7b8e297759a5f0c0

<div class="markdown_content"><p>Following is wrong</p> <p><span style="color: 50%;">You could either use a UNION datatype, using a word and an array of bits (not bool).<br/> This way you could achieve your nice indexed loop.</span></p> <p>So, assuming IN_DIAG_ID is an array of your union :<br/> </p></div>

2020-02-27T14:21:04.478000Z2020-02-27T14:21:04.478000ZAnonymoushttps://forge.codesys.com/u/*anonymous/https://forge.codesys.com09772d227878aaf1fb6c1fcb82d102ff399a7536

<div class="markdown_content"><p><em>Originally created by:</em> scott_cunningham</p> <p>Bit access by a variable is not supported. Try this instead:</p> <div class="codehilite"><pre><span></span><span class="k">FOR</span> <span class="nv">i</span>:<span class="o">=</span> <span class="mi">0</span> <span class="nv">TO</span> <span class="mi">99</span> <span class="nv">BY</span> <span class="mi">1</span> <span class="k">DO</span>    <span class="nv">Temp</span> :<span class="o">=</span> <span class="nv">IN_DIAG_ID</span>[<span class="nv">i</span>]<span class="c1">;</span>    <span class="k">FOR</span> <span class="nv">j</span>:<span class="o">=</span> <span class="mi">0</span> <span class="nv">TO</span> <span class="mi">15</span> <span class="nv">BY</span> <span class="mi">1</span> <span class="k">DO</span>       <span class="k">IF</span> <span class="nv">Temp</span>.<span class="mi">0</span> <span class="o">=</span> <span class="nv">TRUE</span> <span class="nv">AND</span> <span class="nv">safety_repeat</span>[<span class="nv">i</span>,<span class="nv">j</span>] <span class="o">=</span> <span class="mi">0</span> <span class="k">THEN</span>          <span class="nv">safety_repeat</span>[<span class="nv">i</span>,<span class="nv">j</span>] :<span class="o">=</span> <span class="mi">1</span><span class="c1">;</span>          <span class="k">EXIT</span><span class="c1">;</span>       <span class="nv">END_IF</span>       <span class="nv">Temp</span>:<span class="o">=</span> <span class="nv">SHR</span><span class="ss">(</span><span class="nv">Temp</span>,<span class="mi">1</span><span class="ss">)</span><span class="c1">;</span>    <span class="nv">END_FOR</span> <span class="nv">END_FOR</span> </pre></div> <p>Not tested - I answered while traveling!</p></div>

2020-02-27T14:21:04.049000Z2020-02-27T14:21:04.049000ZCodesysAmhttps://forge.codesys.com/u/codesysam/https://forge.codesys.com242bcc90c8a3a03dacd6a987d66834c9cf9705b2

<div class="markdown_content"><p>Guten Abend liebe Community,</p> <p>ich hab ein klein großes Problem. Es geht darum ,dass ich über Codesys eine Tabelle erstellen muss.<br/> Die Kommunikation läuft über MODBUS TCP und ich müsste die channel so wie bei bits hochzählen und auf TRUE abfragen. Aber es kommt immer der Fehler: 'Bitzugriff benötigt ein Literal oder eine symbolische ganzzahlige Konstante'.<br/> Mein Programmteil sieht im moment so aus:<br/> FOR i:= 0 TO 99 BY 1 DO<br/> FOR j:= 0 TO 15 BY 1 DO<br/> IN_DIAG_ID<span>[i]</span>.j;<br/> IF IN_DIAG_ID<span>[i]</span>.j = TRUE AND safety_repeat<span>[i,j]</span> = 0 THEN<br/> safety_repeat<span>[i,j]</span> := 1;<br/> EXIT;<br/> END_IF<br/> END_FOR<br/> END_FOR<br/> über Hilfe wäre ich sehr dankbar.</p> <p>Schönen Abend noch </p> <p>MfG</p></div>