摘要
为解决信集闭系统的扩展问题,提出一种VB环境下双串口通信的PLC监控网络设计方案,并重点论述了基于CNET协议和CCM协议的软件设计思路。实践证明本方案具有时实性好、扩展性强等优点。
In order to resolve the expansion problem of signal centralising and blocking system, a PLC monitoring network design scheme through double serial ports communication based on VB condition is presented in the paper. The software designing thoughts based on CNET and CCM protocols is discussed emphatically. Experiment proves that the system has good real-time characteristic and excellent scalability.
出处
《计算机应用与软件》
CSCD
2009年第7期178-180,共3页
Computer Applications and Software
