Control system based on DMX512 protocol

The utility model provides a control system based on the DMX512 protocol, and the system comprises a DMX512 main controller, a data bus, N node controllers (N is greater than or equal to one), and a controlled electric appliance. The DMX512 main controller and the node controllers are connected through the data bus to form a bus-type network. Each node controller comprises a control signal input end, a control signal output end, and an address signal output end, wherein the control signal input end is connected with the data bus, and the control signal output end is connected with the controlled electric appliance. The address signal input end of the n-th node controller (n is greater than one and less than or equal to N) is connected with the address signal output end of the (n-1)-th node controller. The control signal also comprises an end part identification mark. The address signal input end of the first node controller and the address signal output end of the N-th node controller are respectively connect