一种单片机对变频器通讯控制的实现

Control of a Single-chip Microcomputer over Frequence-changer in Communication

针对变频器采用继电器外部控制方式稳定性差、调节频率不方便易产生误动作或动作不到位的情况 ,用单片机通过 RS-

Because frequence changer controlled by external relay is in low stability with incommodious speed regulation or unreliable action,the authors utilize AT89C51 Single Chip Microcomputer to cntrol Frequence changer in communication by RS 485 interface