By combining data gradation, multi-agent communication and knowledge discovery in data-base, the useful information can be extracted from WAMS (Wide-Area Monitoring System).

ICD in the area has abundant practical experience, both for small office monitoring system, or large-scale complex control system, ICD equally deserving.

This paper introduces the application of Ethernet and Fieldbus in the control system of drugs packaging production line. The monitoring area of this system is also discussed.