摘要
当今现场总线种类众多,至今仍未形成统一标准,这给不同厂商的设备互联带来了诸多不便。针对该种情况,研究并设计了Profibus-DP/Modbus协议转换模块,通过该模块可以将Modbus设备无缝接入Profibus总线系统。模块以S3C2440A为核心,采用"MCU+ASIC"的硬件设计来保证传输的可靠性,电气隔离接口提高了系统的抗干扰性;同时,在程序设计方面,通过单缓冲等一系列方法来保证通信的实时性。实验表明,该模块在有效降低成本的同时,具有良好的实时性、可靠性及抗干扰性,具有进一步研究推广的价值。
There are many types of fieldbus today, but they have not formed a uniform standard, which brings a lot of in- convenience to the interconnection of different vendor＇s equipments. In view of this situation, this paper designs and immplements Profibus-DP/Modbus protocol convertion module, through this module we can connect the modbus equip- ment to the profihus fieldhus system seamless. The module with S3C2440A as the core, adopt the hardware design of ＂MCU＋ AS/C＂ to ensure the realiahlity of transmission,at the same time, electrical isolation improve the ability of system anti-interference; Meanwhile,in program design, through a series of methods to ensure tile realtime communition, thus as signle buffering technology. Experiments show that the module has a good real-time performanee,realiablity and interfer- ence immunity,it with further reaserarch and promotion of value.
出处
《软件导刊》
2015年第5期148-151,共4页
Software Guide
