摘要
针对目前大多数串口服务器仅支持主副机而不支持多主机、不支持Modbus TCP转Modbus RTU等问题,设计了一种嵌入式串口共享服务器。该串口共享服务器采用Cortex-M3内核的LM3S9B92芯片设计,实现了单芯片以太网到3个串口的转换功能。测试结果表明,该串口共享服务器收发数据准确,通信速率高,且具有Modbus TCP转Modbus RTU功能。
In view of problems that most serial servers only support main and sub machines but not support multiple main machines and Modbus TCP converting to Modbus RTU at present, an embedded share serial server was designed. The share serial server uses LM3SgB92 chip based on Cortex-M3 and realizes conversion function of a single-chip Ethernet to 3 serial ports. The test results show that the share serial server can send-receive data correctly with high communication rate and realizes function of converting Modbus TCP to Modbus RTU.
出处
《工矿自动化》
北大核心
2014年第7期93-95,共3页
Journal Of Mine Automation
基金
中煤科工集团常州研究院有限公司市场化推广项目(13GY006-1)
关键词
串口服务器
共享服务器
通信隔离
虚拟串口
协议网关
Key words ： serial sever
share server
communication insulation
virtual serial
protocol gateway
