Before you start

Before you begin, make sure:

The Eastron meter is physically installed and powered on

Step-by-Step Instructions

1. Connect the meter to the gateway

The Eastron SDM230 and SDM72DM connect via RS485 serial communication, not via Ethernet.

SDM230 — RS485 terminals:

Pin 5: RS-485 A
Pin 6: RS-485 B
Pin 7: RS-485 GND (G)

SDM72DM — RS485 terminals: Refer to the connection diagram on the meter or in the manufacturer's documentation.

Connect the RS485 A, B, and GND terminals on the meter to the RS485 interface on the gateway.

2. Access the meter settings

Use the built-in LCD display and two buttons (Enter and Scroll) to enter Set-up mode.

Press and hold the Enter button for 3 seconds
Enter the password (default: 1000). Use the Scroll button to change each digit, and the Enter button to move to the next digit
Press Enter to confirm

3. Enable communication via RS485

Navigate to
Prty (Parity)
Configure the following settings:
- Parity: E (Even)
Save the settings by pressing Enter

4. Discover the meter in the commissioning wizard

The meter is now ready for the commissioning wizard. The gateway will scan for connected devices, which may take a few minutes. Once complete, the Eastron SDM meter will appear on the results page.

FAQ

Why isn't the meter appearing in the commissioning wizard?

Check that the RS485 A, B, and GND terminals are correctly connected to the gateway RS485 interface. Verify that the RS485 parity is set to E (Even) on the meter display. Restart the gateway and wait for the network scan to complete.

Do I need additional hardware for gridBox v4?

Yes, gridBox v4 does not have a built-in RS485 interface. You need a USB-to-RS485 converter — connect the meter's RS485 terminals to the converter, then connect the converter to a USB port on the gateway.