用P37 P21 P22 P23 P16 P17编写流水灯(useP37 P21 P22 P23 P16 P17to finish light)

通过485接收上层设备发来的显示数据，并驱动4个P16模组进行显示。(The display data is sent through 485 receiving upper layer equipment, and the 4 P16 modules are driven to display.)