基于PLC的增量编码器数据保持方法

PLC-based data hold method for incremental encoder

针对增量编码器使用过程中,常发生因PLC断电或故障而导致编码器数据丢失,使得设备运行出现异常的问题,利用PLC的功能和特性进行编程,保持编码器数据,使设备恢复工作时能正常运行。该方法在起重机项目上成功应用,具有一定的通用性,而且方法不限于某一种PLC,也不限于某一种元器件和设备。

When the incremental encoder operates,abnormal operation may occur due to data loss caused by PLC outage or fault.To deal with such problem,the paper programmes based on the functions and characteristics of PLC to hold the encoder data and make sure that the equipment opearates normally when it resumes work.The method is successfully used in a hoisting project and can be applicable to similar projects,,not limited to certain PLC,certain component or equipment.