https://forge.codesys.com/forge/talk/Engineering/thread/ae2269a13b/2020-02-27T14:05:47.682000ZRecent posts to compare bool arrays2020-02-27T14:05:47.682000Z2020-02-27T14:05:47.682000Znikk4shttps://forge.codesys.com/u/nikk4s/https://forge.codesys.com0e15e5e39e36bfe129bebb103cfe72da57b74183

<div class="markdown_content"><p>Thank you. I changed array<span>[0..15]</span> of Bool to array<span>[0..0]</span> of INT. These I can compare with math operators. </p></div>

2020-02-27T14:05:46.783000Z2020-02-27T14:05:46.783000ZAnonymoushttps://forge.codesys.com/u/*anonymous/https://forge.codesys.comc452ade96189d447374e868ba0f7d421369227f3

<div class="markdown_content"><p><em>Originally created by:</em> scott_cunningham</p> <p>A BOOL is not a BIT (BOOLs in CoDeSys are byte-sized by default). So you are really trying to compare a structure (a chunk of bytes). IF Struct1 = Struct2 will not work - you cannot also do Struct1 := Struct2. You have to compare each element. Your hardware source or the system libraries should have a function (for copy, I know there is a SysMemCopy or something like that). Sorry, I am not in front of my PC, so I cannot give you the exact item.</p></div>

2020-02-27T14:05:46.462000Z2020-02-27T14:05:46.462000Znikk4shttps://forge.codesys.com/u/nikk4s/https://forge.codesys.com93a065941e22ad653e3acddbbccfaa22f763e100

<div class="markdown_content"><blockquote> <p><strong>rjafrate hat geschrieben:</strong><br/> Correct declaration of bool array may help.</p> </blockquote> <div class="codehilite"><pre><span></span><span class="n">key_alarms</span><span class="o">:</span> <span class="n">ARRAY</span><span class="o">[</span><span class="mi">0</span><span class="o">..</span><span class="mi">15</span><span class="o">]</span> <span class="n">OF</span> <span class="n">bool</span><span class="o">;</span> <span class="n">no_alarms</span><span class="o">:</span> <span class="n">ARRAY</span><span class="o">[</span><span class="mi">0</span><span class="o">..</span><span class="mi">15</span><span class="o">]</span> <span class="n">OF</span> <span class="n">bool</span><span class="o">;</span> </pre></div> <p>I declared as you said. Still have the same issue. In logix I think this is a file bit compare FBC function. Cannot seem to find the similar functiion for codesys.</p></div>

2020-02-27T14:05:46.140000Z2020-02-27T14:05:46.140000Zrickjhttps://forge.codesys.com/u/rickj/https://forge.codesys.com1f6c2cc67fbcf17b9ccb886016ef70974ab0e0df

<div class="markdown_content"><p>Correct declaration of bool array may help.</p> <div class="codehilite"><pre><span></span><span class="n">key_alarms</span><span class="o">:</span> <span class="n">ARRAY</span><span class="o">[</span><span class="mi">0</span><span class="o">..</span><span class="mi">15</span><span class="o">]</span> <span class="n">OF</span> <span class="n">bool</span><span class="o">;</span> <span class="n">no_alarms</span><span class="o">:</span> <span class="n">ARRAY</span><span class="o">[</span><span class="mi">0</span><span class="o">..</span><span class="mi">15</span><span class="o">]</span> <span class="n">OF</span> <span class="n">bool</span><span class="o">;</span> </pre></div> </div>

2020-02-27T14:05:45.792000Z2020-02-27T14:05:45.792000Znikk4shttps://forge.codesys.com/u/nikk4s/https://forge.codesys.com2bd0bb0e1670ee41a1f05251b739e76884ed9b45

<div class="markdown_content"><p>I have 2 bool arrays<br/> key_alarms: ARRAY<span>[0..0]</span> OF ARRAY<span>[0..15]</span> OF bool;<br/> no_alarms: ARRAY<span>[0..0]</span> OF ARRAY<span>[0..15]</span> OF bool;<br/> no_alarms is an empty array -all false or all 0's<br/> I would like to compare that if any bool of key_alarms is high/true/1, set another bit.<br/> I have tried GT and NE functions with these 2 arrays as inputs and receive an error as below.</p> <div class="codehilite"><pre><span></span> <span class="c1">------ Build started: Application: Device.Application -------</span> <span class="n">typify</span> <span class="n">code</span> <span class="p">...</span> </pre></div> <p><span>[ERROR]</span> garagepi: key_faults <a class="" href="../Network%2016%20/%20Operator%20'NE'%20(Impl)">Device: PLC Logic: Application</a>: C0068: Compare not possible on objects of type 'ARRAY <span>[0..0]</span> OF ARRAY <span>[0..15]</span> OF BOOL'</p> <p>What function would allow me to compare these 2 arrays of inputs within a ladder program?</p></div>