CiA® 303 series: CANopen-related documents

CiA 303 is a set of documents, having various topics in its scope, such as CANopen physical layer network and device design. This includes the CANopen device status indicated by means of LEDs (light-emitting diodes). CiA 303 comprises the following parts:

  • Part 1: CANopen physical layer
  • Part 3: Indicator specification

Part 1 provides some physical network design recommendations. It also specifies 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 no longer limited to CANopen.

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

The content of Part 2 defining the representation of the SI units (international system of units) and prefixes has been moved to the CiA 890 technical report. This document is no longer limited to CANopen specifications.


Title Details
CiA 106 version 1.1.0 Connector pin-assignment recommendations

This document recommends the connector pin-assignment for CAN interfaces. This includes the CAN_H and CAN_L pins, the ground pin, and the power supply pins.

2023-07-11 896 KB TR Login
CiA 303-1 version 2.0.1 Device and network design - Part 1: CANopen physical layer

This document provides device and network design recommendations for the CANopen physical layer. Additionally, it provides guidelines for selecting cables for use in CANopen systems.

2023-03-27 217 KB TR Login
CiA 303-2 version 1.5.0 Device and network design - Part 2: Representation of SI units and prefixes

2023-01-10 82 KB withdrawn Login
CiA 303-3 version 1.4.0 Device and network design- Part 3: CANopen indicators

This recommendation describes the communication-related indicators. Additional application- related indicators are either described in the appropriate device profile or are manufacturer-specific.

2012-04-27 237 KB PAS Login
CiA 890 version 1.0.0 Presentation of SI units and prefixes

This document provides recommendation how to represent the international system of units and prefixes in parameter specifications. It recommends also the structure of configuration parameters for SI units and prefixes.

2023-03-10 266 KB TR Login