https://forge.codesys.com/forge/talk/Engineering/thread/5cf127f9ae/2020-05-18T05:56:41.189000ZRecent posts to Convertion Real to UDINT2020-05-18T05:56:41.189000Z2020-05-18T05:56:41.189000Zi-campbellhttps://forge.codesys.com/u/i-campbell/https://forge.codesys.com916bf35af1271624caba7344e9740f2990fa8095

<div class="markdown_content"><p>The REAL format is limited to about 7 or 8 digits of precision.<br/> For the precision you need, use LREAL.</p></div>

2020-05-18T05:24:44.297000Z2020-05-18T05:24:44.297000Zmawalochttps://forge.codesys.com/u/mawaloc/https://forge.codesys.comd7cc6ad1169f069d1053a3333ee3064e51fa6e55

<div class="markdown_content"><p>Hello ,</p> <p>I've an issue where I don't know where it comes from.<br/> I'm trying to make a combination of two numbers:<br/> -First Number I will call A:<br/> where he could gets until 5 digits.aaaaa =&gt; Actual type UDINT<br/> -Second number i will call B:<br/> where he could gets also until 5 digits.bbbbb =&gt; Actual type UDINT<br/> A:28<br/> b:235</p> <p>How I do is :<br/> REAL_TO_UDINT(((UDINT_TO_REAL(28)/10000)+235)*10000)</p> <p>My Problem is when b as 3 digits my result is ok.<br/> Result : 23500028<br/> but now if my b numbers increase lets said 4 or 5 digits the result change<br/> and I arrive to:<br/> b:1235<br/> result: 123500030</p> <p>I think there is a rounding somewhere That I don't find.<br/> But in anycase my result is still under what UDINT can accept, this is why I don't understand</p> <p>thanks you for your comment</p></div>