西门子变频器的应用第7讲 S7-300 PLC与MasterDrives变频器的PROFIBUS通讯

摘要

PROFIBUS是一种用于工厂自动化车间级监控和现场设备层数据通信与控制的现场总线技术，可实现现场设备层到车间级监控的分散式数字控制和现场通信网络。本文主要阐述S7-300 PLC与MasterDrives变频器的PROFIBUS通讯。%The PROFIBUS is a kind of the fieldbus technology which is used in the workshop-level monitoring of the factory automation, and in the data communication and control for on-site equipment level. It realizes the functions of the distributed digital c ontrol and field communications network from the on-site equipment level to the shop floor level monitoring. The distributed digital control and field communications network between the on-site equipment level and workshop-level monitoring can be achieved by this technology. This article describes S7-300 PLC's communication with MasterDrives inverter via the PROFIBUS.