Based on works above, the requirements of field control network in FCS are researched and the limitations of existing fieldbus technologies are analyzed. In addition, the necessity of using Ethernet to design next-generation FCS is analyzed in details.

• 在上述基础上,研究了现场总线控制系统及其对现场级控制网络的要求,分析了已有现场总线的局限性,以及使用以太网作为现场总线构建新一代FCS的必要性。