With the communication interfaces of RS-232, RS-485, CAN field bus and Ethernet, it is available for different connection modes of power system.
装置配有RS - 232, RS - 485, CAN现场总线及以太网通信接口，可适用于电力系统的多种接线方式。
It studies the intelligent sub-station about its hardware and software structure, detailedly analyses RS-485 bus communication technique and bi-port RAM arbitration technique.
研究了智能分站的硬件和软件结构，详细分析了RS - 485总线通讯技术、双端口ram仲裁技术。
The essay introduces multi-chip calculator communication system based on RS-485 bus, especially MAX-487 chip and the components of the communication system and gives the flow diagram.
介绍了基于RS-485总线的单片机多机通信系统，重点介绍了MAX-487芯片和通信系统的组成，并给出了流程图。
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