利用USS通讯协议完成S7-200对MM420变频器的控制

摘要

本文通过对USS通信协议的介绍,利用PLC通过USS协议完成对西门子变频器MM420的启动与停止,也可以通过相应的指令完成对变频器参数的写入与读取.%Based on the introduction of USS communication protocol, using PLC and through the USS protocol to complete the start and stop of Siemens inverter MM420, complete the write and read of frequency inverter parameter through the corresponding instructions.