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CAN 通信问题



我使用2812 进行CAN 通信测试,发现距离在2米以内,   收发是正常的, 而当距离拉大到10米左右, 收发就不正常了;

这样会是CAN 接收电路?CAN 芯片 PCA82C250 ?还是ZLG USBCAN_E_U 接收模块的问题呢?

不知有哪位大咖贡献一点思路?

谢谢!!