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针对矿井提升机控制系统的高可靠性要求,提出了基于PROFIBUS现场总线的双PLC实现“双线控制”的矿井提升机控制方案,介绍了双PLC控制系统的工作原理及提升机双机热备控制系统的软硬件配置。重点阐述了2个S7-300PLC(CPU315-2DP)主站的PROFIBUS现场总线提升机控制系统的PROFIBUS网络具体构建步骤方法,并给出了主/从PLC控制系统的软件工作流程以及主/从控制系统切换机制。
According to the high reliability requirement of the mine hoist control system, a dual PLC based on PROFIBUS fieldbus is proposed to realize the mine hoist control scheme of “two-wire control”. The working principle of double PLC control system and the principle of hoist double machine Hot Standby Control System hardware and software configuration. The method of constructing the PROFIBUS network of PROFIBUS field bus elevator control system of two S7-300PLC (CPU315-2DP) master stations is expounded emphatically, and the software workflow of the master / slave PLC control system and the master / slave control System switching mechanism.