摘要
以直流牵引供电系统为例,提出了一种基于Modbus协议的通讯方式实现其内部通信。通过对直流牵引供电系统内部通信数据进行分析,采用RS485接口,运用Modbus协议实现了监控软件对微机保护装置和S7-200的串行通信,可靠地实现了系统内部各模块之间的通信,提高了系统的整体运行效率及可靠性。
Taking DC traction power supply system as an example, a communication mode based on Modbus is proposed. Based on the analysis of interior communication data on DC traction power supply system, the serial communication between SCADA and microprocessor protection equipment and S7-200 is realized based on modbus protocol of the RS485 interface. The communication of all modules of system interior is reliably accomplished, simultaneity the whole efficiency and security of system are improved.
出处
《船电技术》
2012年第10期37-39,共3页
Marine Electric & Electronic Engineering
