A CANopen I/O module: Simple and efficient, system integration

• Type: Article in International Conference Proceedings Book
• Date: 1998

Authors

Barbosa, MBM (Author) Other; Adriano Carvalho (Author) FEUP; Farsi, M (Author) Other

Conference proceedings International

Title: IECON '98 - PROCEEDINGS OF THE 24TH ANNUAL CONFERENCE OF THE IEEE INDUSTRIAL ELECTRONICS SOCIETY, VOLS 1-4

Pages: 155-159

24th Annual Conference of the IEEE Industrial-Electronics-Society

AACHEN, GERMANY, AUG 31-SEP 04, 1998

Indexing

ISI Web of Knowledge - 1 Citation

Scopus - 2 Citations

Other information

Authenticus ID: P-008-NEA

Abstract (EN): CANopen is a field level communication protocol for industrial automation distributed applications. The acceptance of CANopen is already widespread and continues growing, because it offers not only all the well known features of CAN for real-time communication, but also a powerful set of higher level Application Layer services. These services implement an object-oriented distributed environment for simplified system integration, but still they allow for a very high level of communication efficiency. Often, sensors and actuators have to be placed at geographically remote locations, at considerable distances from the processor(s) running a control application. When this is the case, a possible solution, that is gaining increasing popularity, is to use an autonomous I/O module, located close to the sensors and actuators, that provides the application with an interface to these devices. For this to be possible, the application must be distributed between the remote I/O module and the local processor(s) using a communication network to allow the different parts to cooperate. This work is centred on the development of an I/O module of the type previously described, based on the SAB-C167CR-LM chip from SIEMENS. The device is able, on one hand, to interface with sensors and actuators using digital signals and, on the other hand, to communicate using the CANopen protocol. In other words, the I/O module makes sensors and actuators accessible via the CAN bus, using the CANopen protocol. The objective is to show that CANopen can be implemented over new hardware platforms, in minimum time, with satisfactory results. It is shown that CANopen provides a systems-integrator-friendly object-oriented environment and that for this reason, the CANopen Communication Profile greatly simplifies the implementation of distributed applications in CAN based systems. Furthermore, CANopen also provides flexible realtime data transfer mechanisms that are able to meet time-critical constraints and, therefore,make CANopen a good solution for distributed control environments.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 5