Extending ISO 11783 for four wheel steering and implement steering

The current ISO 11783 standard supports guidance communication between a guidance system and a tractor with a single actuator, but nothing more. In this paper, the developed concepts to extend the ISO 11783 standards are presented, to cover a) four-wheel steering of tractor, b) implement steering and c) interchange of steering system parameters. The developed concepts are backwards compatible with the current standard that is desirable for product development and management. The concepts are scalable and flexible, for future extensions (like chained implements). The concepts do not limit to any specific navigation principles but allow interchange of relevant variables that generalize any system, both tractors and implements. Opportunities of ISO 11783 towards support of four-wheel steering and implement steering are discussed and proposed plus interchange of relevant parameters. For the future, it is important and relevant not to design the communication around any specific algorithms but generalize in order to standardize only the communication interface, not the method of guidance.