Below will answer the questions of DMX512.
I has question of DMX512 for you，this is roughly thought as follows:
I will be do a system that is simply control the lights products with MCU to process a signal of DMX512。so that there are several lamps can be terminal. A very simple system, a controller, a few lamp terminal。The controller sends a 512 signal to control each lamp state。Now 512 protocol is based on RS４８５, is half duplex, how to identify the data packets belong to the lamp terminal。
Answer:
Some things do not understand ah, please told me a simple control structure, can realize the dimming function that will do, thank you!! In simply words for you,The 512 protocol data packets does not to send address signal ah, how to let the equipment identification? It is a field(data packets) with a corresponding equipment(your device channel N corresponding data packets N )