Introduction - If you have any usage issues, please Google them yourself
plc programming. PLC program in accordance with the definition of communication protocols to identify its information content. Through the PC s COM1 and S7-200 PLC s RS 1 232 serial port hardware connection, and then through the S7-200 series PLC to communicate programming, you can achieve with the host computer communications.
Packet : 357386293.rar filelist
4)PC与PLC通信软件的设计开发.pdf