适用于变电站的CAN现场总线通信适配卡的设计.pdf

17 5 Vol. 17 No. 5 2005 10 Proceedings of the CSU -EPSA Oct. 2005 CAN , , , ( , 430072) : , ; , , , ISA , 89C52 , SJA 1000 , RAM PC , EPLD RAM : ; ; ; : TP336: A : 1003-8930( 2005) 05-0086-04 Design of CAN Fieldbus Communication Adapter for Transformer Station ZHU H a-w ei, WU A i-liang, YA NG R -feng, XIA O Tao ( School of Electrical Engineering, W han University, W han 430072, China) : Abstract Meas rement and cont rol system for transformer station based on fieldb s is prevalent recently w hose core is comm nication betw een nodes and betw een PC and node. The comm nicat ion adapter is t he key of the core. Data of nodes is transmit ted t o PC and command of PC is t ransmitt ed to nodes by adapter . In the , , 89 52 1000 adaper ISA interface is eq ipped C w orks as microprocessor and SJA w orks as comm nicat ion con- troller, d al-port RAM is sed for the channel of dat a exchange bet ween PC and CAN cont roller and EPLD is sed to cont rol tw o port RAM and process interr pt signal. Lastly, the softw are design of adapter is present- ed briefly. : ; ; ; - Key words fieldb s CAN fieldb s adapter d al port RAM , 1 , , , , , , [ 3] , , , , , , : FF , Lonworks , , PROFIBUS , HART , CAN [ 1] CAN , 20 80 , CAN , , [ 2]