This guide will help to do initial setup to a Dragino RS485-LN node: Power on and UART connectivity.

1. Pin Mapping

RS485 pins:

  • RS485 A:  to RS485 A of the RS485 sensor
  • RS485 A: to RS485 A of the RS485 sensor
  • GND_485 (Optional): To GND of RS485 sensor. This is only required for long RS485 cable.

Power pins:

  • VIN+: To VCC+ of the power supply (7-24v). Recommended voltage: 12v or 24v.
  • VIN-: To GND of the power supply

Other pins:

  • INT: To set interrupt to send an uplink.
  • PROG: To connect to UART cable for debugging or uploading firmware

Buttons:

  • RST: To reset node
  • PRO: To enter flashing mode
  • ACT: To send an uplink

2. Connect to Power and RS485 Sensors

Sample wiring from RS485-LN to multiple RS485 sensors:

  • 12vDC or 24vDC adapter is required.
  • A and B port of RS485-LN node are wired parallelly to A and B of RS485 sensors.

3. Connect UART cable

In the box, there is a 3.5mm program cable.

To connect the 3.5mm program cable into PROG port of the node and UART USB into the laptop/PC.

4. Connect to UART console

Step 1: To open a UART console

Step 2: To open Tera Term and check if the frequency plan is AS923-2 for Vietnam.

  • Default password: 123456
  • Reboot: ATZ
  • Show all configurations: AT+CFG

Step 3: To check for LoRaWAN information.

  • DEUI: Node ID. Must be unique.
  • Required for OTAA: APPKEY.
  • Required for ABP: DADDR, NWKSKEY and APPSKEY
  • APPEUI: May or may not required by the server.

Done.

Start your Smart projects

Subscribe Easy LoRaWAN Cloud to try all the guides and visualize data from your LoRaWAN nodes.

Donate for helpful Guides

Feel free to buy us a coffee for helpful LoRaWAN guides.