The design of PROFIBUS-DP and CAN bus communications unit in drilling rig control system

The paper presents that PROFIBUS-DP and CAN bus communication unit is developed. For drilling rig electric control system the communication unit achieves communication function between PLC and diesel generator controller and the remote control function of diesel generator by PLC. The data transmission is reliable and the transmission speed is high in communication unit And it has further consummated the digital control level of the drilling rig electric control system.