Kvaser - Controller Area Network (CAN, CANbus) Information

<body> <script type="text/javascript" language="javascript" src="/js/random_bbild.js"></script> <script type="text/javascript" LANGUAGE="JavaScript">  </script> <p> <br> <table border="0" width="585" cellspacing="0" cellpadding="0"> <tr valign="TOP"> <td width="25"> </td> <td colspan="3" width="640"> <h1><b>CAN (Controller Area Network)</b></h1> </td> </tr> <tr align="LEFT" valign="TOP"> <td width="18"> </td> <td colspan="3" width="640"> </td> </tr> <tr align="LEFT" valign="TOP"> <td height="40" width="18"></td> <td colspan="3" height="40" width="640"> <p>The CAN protocol is an ISO standard (ISO 11898) for serial data communication. The protocol was developed aiming at automotive applications. Today CAN has gained widespread use and is used in industrial automation as well as in automotives and mobile machines. </p> </td> </tr> <tr align="LEFT" valign="TOP"> <td height="40" width="18"> </td> <td colspan="3" height="40" width="640">   <ul> <li> <a href="can_index.htm" target="_self"> Table of contents</a> </li> </ul> <h3>About CAN</h3> <ul> <li> <a href="intro/index.htm" target="_top"> Introduction</a> </li> <li> <a href="protocol/index.htm" target="_top">The CAN Protocol Tour</a> </li> <li> <a href="hlps/index.htm" target="_top">Higher Layer Protocols (J1939, CANopen, DeviceNet, CanKingdom, ...)</a>   </li> <li> <a href="protocol/standards.htm" target="_self">CAN Standards</a> </li> <li> <a href="info/whitepapers.htm" target="_self">Slide Shows and White Papers</a> </li> <li> <a href="info/index.htm" target="_top">Further information, useful links, etc.</a>  </li> </ul> <h3>About other related busses and standards</h3> <ul> <li><a href="misc/lin/lin-bus.htm" target="_self">LIN</a></li> <li><a href="misc/j1587/j1587.htm" target="_self">J1587</a></li> <li><a href="misc/j1708/j1708.htm" target="_self">J1708</a></li> <li><a href="misc/j2534/j2534.htm" target="_self">J2534</a></li> <li><a href="misc/rp1210/rp1210-a-b.htm" target="_self">RP1210A, RP1210B</a></li> <li><a href="misc/ccp-xcp/ccp-xcp-protocol.htm" target="_self">CCP/XCP</a></li> </ul> <h3>Tables and Utilities</h3> <ul> <li> <a href="protocol/timing_calc.htm" target="_self">CAN bus parameter calculator</a> </li> <li> <a href="products/index.htm" target="_top">CAN Hardware (controllers, transceivers, and so on)</a> </li> <li> <a href="protocol/can_word_list.htm" target="_self">A small CAN dictionary</a> </li> </ul> <hr> <p> </p> <p>There are a number of good reasons for why the CAN protocol is the right choice:</p> <h2>Mature standard</h2> <p>The CAN protocol has been around for more than 20 years (since 1986). There are now a lot of CAN products and tools available on the open market.</p> <h2>Hardware implementation of the protocol </h2> <p>The CAN protocol is implemented in silicon. This makes it possible to combine the error handling and fault confinement facilities of CAN with a high transmission speed. The method used for distributing messages to the right receivers contributes to gaining a good use of the available band width.</p> <h2>Simple transmission medium </h2> <p>A common transmission medium is a twisted pair of wires. A CAN system can also work with just one wire. In some applications different kinds of links, optical links or radio links, are better suited. Though there is a transmission hardware standard (twisted pair), it is not uncommon to use different transmission solutions depending on system requirements.</p> <h2>Excellent error handling</h2> <p>The error handling of CAN is one of the really strong advantages of the protocol. The error detection mechanisms are extensive, and the fault confinement algorithms are well developed. The error handling and retransmission of the messages is done automatically by the CAN hardware.</p> <h2>Fine fault confinement</h2> <p>A faulty node within a system can ruin the transmission of a whole system, e.g. by occupying all the available band width. The CAN protocol has a built-in feature that prevents a faulty node from blocking the system. A faulty node is eventually excluded from further sending on the CAN bus.</p> <p> </p> </td> </tr> </table> <hr size=1 color="#3366cc"> <img border="0" src="/global/images/gfx/blank.gif" width="18" height="5">© Kvaser AB - All rights reserved | <a href="/corporate/address.htm" target="_self">Contact us</a> | <a href="/corporate/address.htm#webmaster" target="_self">Webmaster </a>| <a href="/sitemap.htm" target="_self">Sitemap</a><br> <img border="0" src="/global/images/gfx/blank.gif" width="18" height="5"><font size="1"><i>Direct link to this page: <script type="text/javascript" language="javascript" src="/js/url.js"></script></font></i><p> <script type="text/javascript" language="javascript1.2" src="/js/menu.js"></script> <script src="http://www.google-analytics.com/urchin.js" type="text/javascript"> </script> <script type="text/javascript"> _uacct = "UA-3048325-1"; urchinTracker(); </script>  </body>