CiA® 303 series: CANopen-related documents

CiA 303 is a set of documents, having various topics in the scope such as physical layer network design, SI unit representation, or indicating the CANopen device status by means of LEDs. CiA 303 comprises the following parts:

  • Part 1: CANopen physical layer
  • Part 2: Representation of SI units and prefixes
  • Part 3: Indicator specification

Part 1 provides some physical network design recommendations. It specifies also the naming conventions for the bus lines, ground lines, and shield connections. Formerly, this document additionally recommended the pin assignment for various types of connectors. These recommendations have been moved to the CiA 106 technical report and are not more limited to CANopen.

Part 2 recommends the representation of the SI units (international system of units) and prefixes for CANopen devices. CiA device and application profiles make use of this representation. It is appreciated that device manufacturers make use of these prefix and SI unit recommendations for manufacturer-specific parameters, as well.

Part 3 recommends blinking-patterns for light emitting diodes mounted on the CANopen device, to indicate the status of the device. Such indicators can help service personnel to identify communication problems without using a comprehensive diagnostic tool.

Title Details
CiA 303-2 version 1.5.0Device and network design - Part 2: Representation of SI units and prefixes
DescriptionThis document provides recommendation on how to represent the international system of units and prefixes in CANopen device, interface and application profiles.
TR266 KiB2012-04-27Login
CiA 303-3 version 1.4.0Device and network design - Part 3: CANopen indicators
DescriptionThis recommendation describes the communication-related indicators. Additional application-related indicators are either described in the appropriate device profile or are manufacturer-specific.
TR237 KiB2012-04-27Login
CiA 303-1 version 2.0.0Device and network design - Part 1: CANopen physical layer
DescriptionThis document provides device and network design recommendations for the CANopen physical layer. Additionally, it provides guidelines for selecting cables for use in CANopen systems.
TR186 KiB2022-05-18Login