Sorry, only Chinese.
Watch on this site (54 minutes, speed is slow):
http://down.hahan123.com/down_server/SuperLightBox/video_teaching/02_RS485_Call.mp4
Watch on Bilibili (54 minutes, speed is fast)
https://www.bilibili.com/video/BV1nLAZefEYn/
This video simulates a centralized control system and demonstrates how an external device can call the SL04 box via RS485/232.
It demonstrates the call of the dmx offline file in the SL04 box for playback control;
Demonstrated how to send code and control the DMX512 device;
Demonstrates how to call LED effects;
There are a few Tips and tricks at the end of video, which are often used for general control in the park, so please pay attention to watch.
……
Note: If you connect to RS232, you need to carry out level conversion, you need to connect an RS232 to 485 level conversion module, Taobao can buy it for a few yuan.
The box is an RS485 interface, the level is 0-5V, not the RS232 level, the RS232 level is -13V to +13V, therefore, if you connect to RS232, you must add a level translation module, otherwise it will burn the output of the box.