Abstract
Aiming at the communication test problem of the DCS upgraded, the novel test software, which contains the functions of DCS digital test, DCS analogue test and data error test, has been developed based on OPC technology in this paper. This software can connect the OPC server of the tested DCS with the remote OPC server of the hardware test platform. Besides, it can realize the real-time acquisition and control of the process data between the two systems. Finally, the system has achieved the purpose of the DCS communication and data error test in the control loop by combining with the internal procedures. The test results have been proved that this software could realize the relevant functions of DCS communication test and could get good usability and scalability.
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