However, it is less to model and evaluate the field communication systems by Petri Nets, and there is no example about both realizing field communication and evaluating its system performance by the protocol description of Petri Nets.

On the base of the study of the field communication technology, the paper reviews its developmental course, introduces its principle and prime characteristics, and discourses upon its importance.

And then, the applicability and pertinency of these two methods are illuminated after analyzing, comparing and validating the performance of field communication protocol using in a .

Based on many types of specified field communication protocols, the method of field communication protocol generation technology incorporating with open program in communication controller is proposed and the direct thought of the generation technology is described.

The principle of user s programming for field communication protocol and the development of the software for graphics-oriented programming interface are described.