📄 can in automation - canopen - introduction.htm
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<TD class=path><A
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href="http://www.can-cia.org/canopen/">canopen</A> >
<A
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<TD class=modify
style="TEXT-ALIGN: right; align: right"><SPAN
id=pingu><A title="Thilo Schumann"
href="http://www.pingu.info/">Pingu</A></SPAN>Last
modified: 2003-12-23</TD></TR></TBODY></TABLE></TD></TR>
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<H2>CANopen protocol - Introduction</H2>
<P>The CANopen application layer and communication
profile (EN 50325-4; CiA 301) supports direct access to
device parameters and transmission of time-critical
process data. The CANopen network management services
simplify project design, system integration, and
diagnostics. In each decentralized control application,
different communication services and protocols are
required. CANopen defines all these services and
protocols as well as the necessary communication
objects. <BR><BR>The Object Dictionary describes the
complete functionality of a device by way of
communication objects and is the interface between the
communication interface and the application program. All
communication objects of a device (application data and
configuration parameters) are described in its Object
Dictionary in a standardized way. These objects are
accessible by a 16-bit index and in the case of arrays
and records there is an additionally 8-bit sub-index.
<BR><BR>On the following pages, you may find information
about the following CANopen services, protocols and
communication objects:<BR></P>
<UL>
<LI><A
href="http://www.can-cia.org/canopen/protocol/pdo.html">Process
Data Objects (PDO)</A>
<LI><A
href="http://www.can-cia.org/canopen/protocol/sdo.html">Service
Data Objects (SDO)</A>
<LI><A
href="http://www.can-cia.org/canopen/protocol/nmt.html">Network
Management Objects (NMT)</A>
<LI><A
href="http://www.can-cia.org/canopen/protocol/special.html">Special
function objects (Sync, Emcy, Time)</A>
<LI><A
href="http://www.can-cia.org/canopen/protocol/errorcontrol.html">Error
control: Heartbeat protocol</A>
<LI><A
href="http://www.can-cia.org/canopen/protocol/od.html">Device
model and object dictionary</A>
<LI><A
href="http://www.can-cia.org/canopen/protocol/bittiming.html">Bit
timing</A> </LI></UL></TD>
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<TD style="FONT-WEIGHT: bold; COLOR: white"
bgColor=#009966 color="white">Direct
links</TD></TR>
<TR vAlign=top align=justify>
<TD><IMG height=8
src="CAN in Automation - CANopen - Introduction.files/link.gif"
width=8 border=0> <A
href="http://www.can-cia.org/canopen/protocol/index.html">Introduction</A>
<P><IMG height=8
src="CAN in Automation - CANopen - Introduction.files/link.gif"
width=8 border=0> <A
href="http://www.can-cia.org/canopen/protocol/pdo.html">Process
Data Objects (PDO)</A></P>
<P><IMG height=8
src="CAN in Automation - CANopen - Introduction.files/link.gif"
width=8 border=0> <A
href="http://www.can-cia.org/canopen/protocol/sdo.html">Service
Data Objects (SDO)</A></P>
<P><IMG height=8
src="CAN in Automation - CANopen - Introduction.files/link.gif"
width=8 border=0> <A
href="http://www.can-cia.org/canopen/protocol/nmt.html">Network
Managment (NMT)</A></P>
<P><IMG height=8
src="CAN in Automation - CANopen - Introduction.files/link.gif"
width=8 border=0> <A
href="http://www.can-cia.org/canopen/protocol/special.html">Special
function objects (Sync, Emcy, Time)</A></P>
<P><IMG height=8
src="CAN in Automation - CANopen - Introduction.files/link.gif"
width=8 border=0> <A
href="http://www.can-cia.org/canopen/protocol/errorcontrol.html">Error
control: Heartbeat</A></P>
<P><IMG height=8
src="CAN in Automation - CANopen - Introduction.files/link.gif"
width=8 border=0> <A
href="http://www.can-cia.org/canopen/protocol/od.html">Device
model and object dictionary</A></P>
<P><IMG height=8
src="CAN in Automation - CANopen - Introduction.files/link.gif"
width=8 border=0> <A
href="http://www.can-cia.org/canopen/protocol/bittiming.html">Bit
timing</A></P>
<UL></UL>
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