RS485 communication procedures, and from the host machine has a ready-made things can be directly used in your development, the PC using VB preparation procedures, more than 485 machine communication is the ASM.

Packet : 349483pc与单片机的rs485源程序（vb＋asm编写）.rar filelist
用VB6标准模块实现微机与单片机间的通信源程序.doc

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