A distributive configuration PLC system was used as control terminal of the detection device, while a relay loop as a redundancy control system.

Corrected issue with the robot control terminal, where if your skill was less than 76 but over 50, you wouldn't get aa message when trying to repair it.

This paper gives a general design of mobile measurement and control terminal, which is based on GPRS, and the design of hardware and software about it is discussed further.