Atmoce MG100 M-gateway (pv)

Installation

1. 1Enable Modbus TCP on the Atmoce MG100 by logging into the Atmozen app or the gateway web interface and activating the Modbus service under the communication or network settings section.
2. 2Connect the Atmoce MG100 to the same LAN as the ModbusCloud Gateway using a standard Ethernet cable; confirm the MG100 has a static or reserved DHCP IP address.
3. 3In your ModbusCloud portal, add the ModbusCloud Gateway, then import the Atmoce MG100 M-gateway (pv) template, entering the MG100 IP address, port 502, and the correct Modbus unit ID.
4. 4Verify the integration by checking the live value of the power register (address 60069) in the portal; a non-zero reading during daylight hours confirms successful communication.

Things to watch for

01

Why does the power register return zero even in daylight?

The MG100 aggregates data from its connected microinverters. If no microinverters are paired or all are offline, the gateway reports zero. Confirm microinverter pairing via the Atmozen app and check that the PV array is energised before re-polling the register.

02

The gateway connects but the portal shows no values. What now?

Check that Modbus TCP is explicitly enabled on the MG100, as it may be disabled by default. Also verify the unit ID configured in the portal matches the one set on the device. Mismatch between unit ID or IP address are the most common causes of empty readings.

03

The energy register value looks implausibly large. Is there a scaling factor?

The energy register (address 60160) is a uint64 type spanning four Modbus registers. Ensure your Modbus client is reading all four consecutive registers and assembling them correctly in big-endian byte order. Partial reads or wrong byte assembly produce grossly incorrect values.

04

Connection drops intermittently. How do I stabilise it?

The MG100 communicates over Ethernet and can lose its Modbus TCP connection if the device reboots or renews its DHCP lease. Assign a static IP or a DHCP reservation to the MG100 on your router, and set the poll interval in the ModbusCloud portal to no less than two seconds to avoid overwhelming the gateway.

Registers (2)

2 read / 0 write

More Atmoce templates

Atmoce MG100 M-gateway (battery)

Atmoce

Modbus TCP

6 registers

Atmoce MG100 M-gateway (grid)

Atmoce

Modbus TCP

8 registers

Atmoce AC Battery and Module-Inverter

Atmoce

Modbus RTU

Controls and monitors Atmoce module-inverters and AC coupled batteries via Modbus RTU.

38 registers9

More TCP templates

Algodue Energy meter UEM80-2D E

Algodue Elettronica S.r.l.

Modbus TCP

Measures single-phase energy consumption and production via Modbus TCP.

12 registers46

Sigenergy SigenStore EC (grid)

Sigenergy

Modbus TCP

5 registers1

Fronius GEN24

Fronius

Modbus TCP

Monitors and controls Fronius GEN24 inverters and PV batteries via SunSpec Modbus TCP

0 registers762

HUAWEI SUN2000 Inverter & LUNA2000 battery

Huawei

Modbus TCP

Monitors HUAWEI SUN2000 inverter, LUNA2000 battery, and Smart Power Sensor via Modbus TCP.

4 registers1248

NIBE Nibe S-Series (SG Ready)

NIBE

Modbus TCP

5 registers1

Fronius - Modbus TCP

Fronius

Modbus TCP

Monitors Fronius Symo and Primo inverters via Modbus TCP

15 registers597