针对以往调度模拟盘控制系统采用非智能化功能单元、并行传输方式所带来的种种弊端，例如：易受到干扰、接线复杂、不能实现显示单元自检及动态潮流方向显示等,本文提出一种基于RS-485总线的解决方案。关键词：调度模拟盘；控制系统；非智能化功能单元；并行传输；RS-485总线；解决方案Abstract:Quite a few problems were apt to be brought in the control system of dispatch simulative board by adopting non-intelligentized function unit and parallel transmission in the past. For example, signal is easy to be disturbed,connection is very complex,system can not accomplish display unit self-checking and dynamic flow direction displaying.This paper has offered a solution based on RS-485 bus.Keywords: Dispatch simulative board；Control system；Non-intelligentized function unit； Parallel transmission；Rs-485 bus；Solution