Datachain linked up datum stand and flow stand is the only route.
数据链是沟通基准站和流动站的唯一路径。
2
Standard datachain and CRC-16 check mode are used in inquiry control by the central station at the drilling company.
数据网由中心站(钻井公司)采用轮询方式控制,使用标准的数据链路控制规程,和CRC-16校验方式。
3
PLC make data acquisition and control of bottom devices, analyzing the feedback parameters of communication and sensor, and the date exchange is carried on in the datachain layer.