https://forge.codesys.com/forge/talk/CODESYS-V2/thread/e23dc1185f/2020-02-27T22:24:25.265000ZRecent posts to SysTime64, shifting between DWORD2020-02-27T22:24:25.265000Z2020-02-27T22:24:25.265000ZPaulhttps://forge.codesys.com/u/paul/https://forge.codesys.com0a66c3b2392d370666a4f44249d5f1e56d41bcd3

<div class="markdown_content"><p>Hi,</p> <p>( Is High DWORD and Low DWORD) </p> <p>I need save actual time and compare. But for better operate I wanted to convert into second. I need doword. </p> <p>My first idea :</p> <p>i := (PlcTick.ulLow / 1000000) + (PlcTick.ulHigh * 10000);</p> <p>!! Wrong !!</p> <p>If ulLow have 16#FFFFFFFF and add ulHigh. Is bad result, surely. </p> <p>I try </p> <p>i := pom := SHR(PlcTick.ulLow, 20) + SHL(PlcTick.ulLow, remainder); </p> <p>Not exactly 1 second. At 5 minute, longer about 15sec! WHY ??? </p> <p>Where is the problem?</p></div>