DLink Serial Port Open Success 串口打开成功 Serial Port Open Fail 串口打开失败 %1 close %1 关闭 UdpSocket open UDP 端口打开成功 Bind and join the gdt multicast group 加入组播成功 Fail to join gdt multicast group. 加入组播失败. Fail to bind gdt multicast socket. 加入组播失败.