https://forge.codesys.com/forge/talk/Engineering/thread/3f25bfd7f3/2020-02-27T14:24:04.724000ZRecent posts to Little Confused2020-02-27T14:24:04.724000Z2020-02-27T14:24:04.724000Zmoggsiehttps://forge.codesys.com/u/moggsie/https://forge.codesys.com1a64dab84c5484805e5a0bfa27bda2a79e7a093f

<div class="markdown_content"><p>To put it bluntly, though I applaud CODESYS for striving to develop an open(ish) platform , it seems to me that there are a few too many "features" that will make this programming environment a niche product. It needs more "polish" before it enters the mainstream.</p> <p>That said, TIAPortal, RSLogix, Proworx, Unity et al have all been through this pain. Some are still there <br/> ( and for balance throw in GE CIMPLICITY Control too ! )</p></div>

2020-02-27T14:24:04.311000Z2020-02-27T14:24:04.311000Zmoggsiehttps://forge.codesys.com/u/moggsie/https://forge.codesys.com864d092f0a0385521cc0b01ec36170e2df9f1807

<div class="markdown_content"><p>Here's a little video to show how "assigments" seem to me behave non-intuitively. I'm sure there's trick, but it's not obvious for the simple-minded.</p> <p><a class="" href="https://forum.codesys.com//download/file.php?id=3608" rel="nofollow">fb_assigment.wmv <span><span>[431.35 KiB]</span></span></a></p></div>

2020-02-27T14:24:03.120000Z2020-02-27T14:24:03.120000Zmoggsiehttps://forge.codesys.com/u/moggsie/https://forge.codesys.comb2ba9bc3a2f1a5667335bc2b38a363b0e78ea244

<div class="markdown_content"><p>where's that in the online manual ?</p> <p>Just asking. I know it's probably in there, but you've obviously a lot more experience than I have.</p></div>

2020-02-27T14:24:02.684000Z2020-02-27T14:24:02.684000ZAnonymoushttps://forge.codesys.com/u/*anonymous/https://forge.codesys.comcf0e8177a61ff060c84fe5b1cc4e55576d1f41d7

<div class="markdown_content"><p><em>Originally created by:</em> ph0010421</p> <p>Drag an 'assignment' from the toolbox</p></div>

2020-02-27T14:24:02.270000Z2020-02-27T14:24:02.270000Zmoggsiehttps://forge.codesys.com/u/moggsie/https://forge.codesys.com4e74305942d307281ea03b24da44af4328bb83ee

<div class="markdown_content"><p>Roman,</p> <p>Thanks for the reply </p> <p>Yes, the ??? can be removed.</p> <p>It's just that I was confused that the output from the FB never prompted for an output parameter, whereas the input parameter looked like it was required ( though in the end not necessary ).</p> <p>In fact, it was not even possible to enter an output parameter on the highest output row/position.</p> <p>Try it, and you will see what I mean.</p> <p>It does not appear to be logical or consistent behaviour, which always makes me think about what else could cause fun.</p></div>

2020-02-27T14:24:00.893000Z2020-02-27T14:24:00.893000Zr.evbatyrovhttps://forge.codesys.com/u/r-evbatyrov/https://forge.codesys.comf545b233acb9e7228be7aca875d064b2b61741d3

<div class="markdown_content"><p>Hi moggsie,</p> <blockquote> <p><strong>moggsie hat geschrieben:</strong><br/> OK, the input isn't required. <br/> codesys_fb_query_3.jpg<br/> But it does look a bit like that when you first create the rung ?</p> </blockquote> <p>You can remove ??? either. </p> <p>Regards<br/> Roman</p></div>

2020-02-27T14:24:00.402000Z2020-02-27T14:24:00.402000ZAnonymoushttps://forge.codesys.com/u/*anonymous/https://forge.codesys.com7a25ed19bf2a664bfebbff017b81a8fa87545fa9

<div class="markdown_content"><p><em>Originally created by:</em> ph0010421</p> <p>Just enjoy the fact it doesn't all arguments passing.<br/> Pp</p></div>

2020-02-27T14:23:59.980000Z2020-02-27T14:23:59.980000Zmoggsiehttps://forge.codesys.com/u/moggsie/https://forge.codesys.com57e3978a4079cb7505923fa97d86a62ee7723b64

<div class="markdown_content"><p>OK, the input isn't required. </p> <p>But it does look a bit like that when you first create the rung ?</p> <p><img alt="IMG: codesys_fb_query_3.jpg" rel="nofollow" src="https://forum.codesys.com//download/file.php?id=3591"/></p></div>

2020-02-27T14:23:58.754000Z2020-02-27T14:23:58.754000Zmoggsiehttps://forge.codesys.com/u/moggsie/https://forge.codesys.com38841722b1f0dfd5b9f52220c46e52a3a55cdc82

<div class="markdown_content"><p>I have declared an FB with VAR_IN and VAR_OUT data types </p> <p>I call the FB from a _MAIN having declared the FB data type</p> <p>When I call the FB from _MAIN why am I required to provide an Input parameter and not an output parameter ?</p> <p>I am sure there is a simple answer to this, but the CODESYS help files do not ( to me at least ) reveal the answer as quickly as one might expect.</p> <p><img alt="IMG: codesys_fb_query_1.jpg" rel="nofollow" src="https://forum.codesys.com//download/file.php?id=3589"/></p> <p><img alt="IMG: codesys_fb_query_2.jpg" rel="nofollow" src="https://forum.codesys.com//download/file.php?id=3590"/></p></div>