基于Profibus-DP的HNC与PLC数据通信实现

Data Communication Between HNC and PLC Based on Profibus-DP

针对工业生产上多控制器控制系统的控制器间数据通信问题,以压铸机中HNC液压控制器与PLC控制器的数据传输为例,提出了基于Profibus-DP的数据通信方案。以西门子S7-300为主站,液压控制器HNC100为从站,通过Profibus-DP现场总线实现了两个控制器之间数据的实时传输,其实时性和精度均满足生产工艺要求。此方案在实际生产中容易实现和推广,具有较好的参考价值。

Based on the example about the data communication of HNC and PLC,a communication scheme between HNC and PLC was proposed based on Profibus-DP. The system was made of upper level industrial control computer PLC S7-300 and hydraulic controller HNC100. In this technique,SIEMENS S7-300 PLC was a master station and communicated with slave station HNC100 by Profibus-DP,so the real-time data communication of the local data was realized.