The RS485 transmission net is made up of the datacollectionstation, which can transmit for remote distance and restrain common mode interference.
各采集器以网络结点的方式挂接到RS485传输网络上,传输距离远,还可有效的抑制共模干扰。
2
The paper mainly introduces datacollection system of oil-well measurement station, and control system based on PLC, and discusses system working principle of measurement station.
文章介绍了油井计量站油井产量数据自动采集系统和基于PLC的自动控制系统构成,阐述了系统工作原理。
3
The communication net depends on telephone as warning flood channel; data transmission instrument as datacollection transmission base equipment; middle station as merged point.