Chinese Version

CANopen Module

-CANopen Interpreter for canAnalyser

Overview

As an addition to the canAnalyser, the CANopen module enables the interpretation of CAN messages according to the CANopen standards. Here the message types defined by CANopen together with their parameters are displayed in color in plaintext. The module is suitable both for the analysis and for testing of CANopen networks.

Description of Functions

The CANopen module interprets all received CAN messages according to the CANopen specifications DS-301, DS-302 and DS-305. The messages are recognized as SDOs, PDOs (also multiplexed), NMT-, Emergency-, Sync- and Timestamp-objects and interpreted accordingly. In addition, the error-contol-, LSS- and Flying-Master-protocol are interpreted. Here it is possible to filter the messages received both with regard to their node number and according to their message type. An SDO transfer is displayed with index and sub-index and the symbolic name of the addressed object dictionary entry. Any abort code which may occur is correctly displayed with the SDO data transferred up to that point. The display is color-coded according to the message type. In addition, the SDO display can be switched between the display of the individual sub-sequences or an overall display of the byte stream transferred. For each message type the original raw CAN-message can be displayed, in order to detect additional or also incorrect protocol data.

The basis for the interpretation of the received data is the so-called configuration set. This either allocates an EDS/DCF file to the 127 possible network subscribers or defines its device profile. The configuration set can be loaded, edited and saved. In addition, it is possible to add, delete and modify the CAN objects used by each node and their CAN identifiers. The profiles used for interpretation are integrated via external text files, by means of which the CANopen module can be very easily extended by new profiles. Due to its flexible structure, the CANopen module can thus be used universally in all CANopen systems.

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