There are some bunchers of FR system in HIFRL. They are very important for improving the beam quality. NB1, a new buncher, was designed in 1999. The control for the buncher was raised in last year. The NB1 control system is consisting of two parts, RF emitter control and moving system control. The NB1 moving system had been finished in Nanjing in 2000 and the emitter control system is going to be used in this year. The NB1 control system is based on CPCI. CAN bus, one sort of the famous field buses, is used to control the stepping motors in moving system. A CPCI/CAN bus converter is located in the CPCI crate. The software designing has been completed and tested. The GUI with windows style is handed to use. Whole control system will be introduced in this paper.
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