“893一网络”系统是近年发展起来的一种高性能、高精度的通用数据采集网络，它适用于各种工业现场和其它恶劣条件下测点多而分散的模拟量信号数字量信号的连续高精度测量。具有测量精度高、抗干扰能力强、通讯速率快、传输距离远、智能化程度高、使用简单灵活、安装维护方便等 “893 a network” system is developed in recent years, a high-performance, high-precision general-purpose data acquisition network, which is suitable for a variety of industrial sites and other harsh conditions and more scattered measurement points analog signal digital signal continuous High-precision measurement. With high accuracy, anti-interference ability, fast communication speed, transmission distance, a high degree of intelligence, easy to use and flexible, easy installation and maintenance