摘要
为PLC设计一种数显表,仅需要2个PLC输出点进行串行数据传输,就可实现多个数据的静态显示,具有信号隔离和驱动功能,可实现多台数显表的级连,是目前占用PLC硬件资源最少的仪表,成本低廉,可靠实用。
A data display device is designed for PLC.The device can display multidata to realize serial communication and stationary data display and needs only two PLC output points.It has functions of isolation and drive for signal.A lot of devices can be connected one by one and wants minimum hardware.It is of low cost and reliable.
出处
《云南冶金》
2005年第3期69-71,共3页
Yunnan Metallurgy
