https://forge.codesys.com/forge/talk/Engineering/thread/e895cf3012/2020-04-16T11:12:20.997000ZRecent posts to Word bit access2020-04-16T11:12:20.997000Z2020-04-16T11:12:20.997000Zlucaver89https://forge.codesys.com/u/lucaver89/https://forge.codesys.com7d587a1a6f7519b32667aa988e59a51de1f0ce10

<div class="markdown_content"><p>Hi,</p> <p>I'm thinking that putbit function is what I need. </p> <p>Another question: If I want to use physical address with AT instruction, how can I avoid overlap address? Many PLC have a tool able to show which physical addresses are free o busy. Does codesys too?</p> <p>Thanks<br/> Luca</p></div>

2020-04-16T10:15:10.471000Z2020-04-16T10:15:10.471000ZJAPIBhttps://forge.codesys.com/u/japib/https://forge.codesys.com31a9b343515057a214fee3a7f3768b8d902475e6

<div class="markdown_content"><p>Hi,<br/> You can acces a bit into a word (or other type as UINT, INT, ...) only with a direct value, a constant, or a BIT data type into a structure.<br/> Please see : <a href="https://help.codesys.com/webapp/_cds_operands_variables_accessing_bits;product=codesys;version=3.5.15.0" rel="nofollow">https://help.codesys.com/webapp/_cds_operands_variables_accessing_bits;product=codesys;version=3.5.15.0</a></p> <p>For your example, you can write :</p> <p>VAR_GLOBAL CONSTANT<br/> iMyBit :UINT:=2;<br/> END_VAR</p> <p>(<em>Program</em>)<br/> wOutputs.iMyBit := TRUE;<br/> wOutputs.5 := TRUE;</p> <p>BR</p></div>

2020-04-16T05:44:14.869000Z2020-04-16T05:44:14.869000Zkislovhttps://forge.codesys.com/u/kislov/https://forge.codesys.comb8b3a2efd418527529e7a4e8580f9a590c744587

<div class="markdown_content"><p>Hi. Use function PUTBIT / EXTRACT from Util library.</p></div>

2020-04-15T16:15:58.887000Z2020-04-15T16:15:58.887000Zlucaver89https://forge.codesys.com/u/lucaver89/https://forge.codesys.com7e1d7779b96a420b75fdc66a029783b3c6232c8a

<div class="markdown_content"><p>Hi to all,</p> <p>I'm searching a way to do something like that:</p> <div class="codehilite"><pre><span></span><span class="n">PROGRAM</span> <span class="n">PLC_PRG</span> <span class="n">VAR</span> <span class="n">wOutputs</span> <span class="p">:</span><span class="n">WORD</span> <span class="n">iMyBit</span> <span class="p">:</span><span class="n">UINT</span><span class="p">;</span> <span class="n">END_VAR</span> <span class="n">iMyBit</span> <span class="p">:</span><span class="o">=</span> <span class="mi">2</span><span class="p">;</span> <span class="n">wOutputs</span><span class="p">.</span><span class="n">iMyBit</span> <span class="p">:</span><span class="o">=</span> <span class="k">TRUE</span><span class="p">;</span> </pre></div> <p>If I try to build this code, the compiler give me errors. Any suggestion to do it?</p> <p>Thanks to all<br/> Luca</p></div>