该DLL为用户编写Widows下PC机与欧姆龙PLC通讯的程序提供了接口，支持VB、VC开发环境。该通讯DLL是基于HOSTLINK协议对PLC中的所有寄存器进行操作，在VC开发环境下编写而成，响应速度特别快，而且完全支持Win9x/2000/XP操作系统。-The DLL is written for users Widows under the PC interface with Omron PLC communication program provides support for VB, VC development environment. The communication DLL is based on the HOSTLINK agreement to operate all registers in the PLC, prepared by the VC development environment, particularly fast response speed, and fully support Win9x/2000/XP operating system.