ESP32-S3-Relay-1CH-RS485
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RS485 Control
Connect the ESP32-S3-Relay-1CH device using RS485, and send data to ESP32-S3-Relay-1CH to control the opening and closing of each relay. Communication is performed at a default baud rate of 9600.
Operation Command Command Function 06 05 00 01 55 00 A2 ED Switch the state of CH1 relay 06 05 00 FF FF 00 BD BD Turn on all relays 06 05 00 FF 00 00 FC 4D Turn off all relays
Hardware Connection
Here we use the example of USB TO RS232/485 Converter for demonstration
ESP32-S3-Relay-1CH USB-TO-RS232-485 RS485 - A+ Tx B - A+ RS485 - B- Rx B - B-
Software Operation
- Use SSCOM to send data
- Open the SSCOM software and select the COM port corresponding to the Port B connected above
- Open the serial port and use the Send Multi Char function to quickly send commands
- You can control the relays with the following commands
