<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/> <title>Frepple / TestOperationPreOp</title> <link rel='stylesheet' href='../styles.css' type='text/css' /> <!--PageHeaderFmt--> </head> <body> <div id="container"> <div id="menubar"> <div id="logo" align="center"> <br/><img src='../frepple.bmp' alt="frepple" /><br/> <a href='http://www.frepple.com/'> <strong>a Free<br/>Production Planning<br/>Library</strong> </a></div> <div id="menu"> <br/> <h3><a href='../Main/HomePage.html'>Main</a></h3> <h3><a href='../UI/Main.html'>User Manual</a></h3> <h3><a href='../Tutorial/Main.html'>Tutorial</a></h3> <h3><a href='Main.html'>Reference Manual</a></h3> <h3><a href='../Main/FAQ.html'>FAQ</a></h3> <h3><a href='../reference/index.html'>C++ API</a></h3> <br/><div> </div> </div> </div> <div id="content"> <br/> <!--PageText--> <div id='wikitext'> <p><a class='wikilink' href='../Main/HomePage.html'>Main</a> > <span class='wikitrail'><a class='wikilink' href='Main.html'>Reference Manual</a> > <a class='wikilink' href='Test.html'>Unit tests</a> > <a class='selflink' href='TestOperationPreOp.html'>TestOperationPreOp</a></span> </p> <p class='vspace'>This test verifies the behavior of pre-operation and post-operation delays.<br />These are as delay times before and after an operation, which the solver tries to respect but can violate if required. </p> <div class='vspace'></div><div><img src='../uploads/Frepple/operation_pre_post.png' alt='' title='' /></div> <p class='vspace'>Several cases are included in this test: </p> <div class='vspace'></div><ol><li>Post-operation time on a fixed-time operation.<br /> The post-operation time is respected when possible, but when running against a lead time constraint the post-operation time is reduced to meet the demand on-time / asap. <div class='vspace'></div></li><li>Post-operation time on a time-per operation.<br /> The constraint is again a lead time constraint. <div class='vspace'></div></li><li>Post-operation time on fixed-time operation.<br /> This time the constraint is the late supply of raw material supply. It causes the post-operation time to be reduced. <div class='vspace'></div></li><li>Post-operation time on multiple levels in the supply path.<br /> The supply path is four levels deep, and a post-operation time is set at each level.<br /> In case of material of lead time constraints the post-operation time on the most upstream operation/operations (i.e. operations deeper in the bill of material) is/are shrunk first. </li></ol> </div> <!--PageFooterFmt--> <!--HTMLFooter--> </div></div> </body> </html>
