基于现场总线兼容技术的除尘系统一体化改造

借助网间协议变换器,实现了Profibus-DP与DeviceNet两种异构现场总线协议网络的通信,建成由西门子PCS7作为上位主控系统,由欧姆龙PLC作为下位现场控制子系统的双层监控系统。通过西门子PCS7系统配置,上位级监控程序连续功能图(continuous function chart, CFC)组态,远程监控画面组态,网关PD-100S设置和下位欧姆龙PLC系统配置,将除尘系统纳入电厂主控DCS管控范围。该一体化改造方案所需购置的新设备少,相关软硬件组态及参数设置量小,在现有除尘系统数据更新量下能可靠地实现远程监控。该方案可为异构现场总线系统集成提供参考。

Integration transform of dust removal system based on fieldbus compatible technology

With the help of a network protocol converter, the Profibus-DP and DeviceNet fieldbus networks communication were realized, which were two networks with heterogeneous protocol. A double levels supervisory control system was built, the Siemens PCS7 as upper main control system, Omron PLC as the control subsystem. By Siemens PCS7 system configuration, the upper level monitoring program CFC configuration, remote monitoring figuration configuration, the gateway PD-100S settings and Omron PLC system configuration, the dust removal system was included in power plant main control system PCS7. The retrofit scheme needed small amount of new equipment. Related hardware and software configuration and parameters setting were simplfy. Under the existing dedusting system data update quantity, the system could reliably realize the remote monitoring. The scheme could provide a reference for the integration of heterogeneous fieldbus system.