Installation · Solplanet

Install GridZeno on Solplanet ASW S-G2 and ASW LT.

The ASW S-G2 is Solplanet's single-phase grid inverter, the ASW LT and HT the three-phase ones from 3 to 360 kW, all without a battery. No cable runs from the GridZeno dongle to the inverter. The dongle talks to Solplanet's Ai-Logger over your network with Modbus TCP on port 9999, which the Ai-Logger uses from the factory. GridZeno can show the production, and the Ai-Logger's protocol can limit the sale. The Ai-Logger is a Solplanet accessory, bought separately and connected to the inverter's RS485 port with a cable. The Ai-Dongle or Wi-Fi stick that comes with the inverter is only for Solplanet's app and cloud and can't be used for GridZeno.

Applies to: ASW1000-6000-S-G2, ASW5000-10000-S, ASW LT-G2, LT-G2-Pro, LT-G3, 75-150K-LT and 250-360K-HT with Ai-Logger
Connection: Over your network, without a cable to the inverter
Time: About 15 minutes

A grid inverter without a battery. GridZeno shows the solar production and lowers the inverter's output at negative prices. What GridZeno can do on Solplanet ASW S-G2 and ASW LT

How the dongle recognises it: The model code 1-5 in 31073 is a grid inverter. The dongle doesn't tell the ASW S-G2 from the ASW LT/HT: input 1000 says whether it's three-phase, and the number of MPPTs in 31074 how many of PV1-PV10 are added up.

GridZeno Dongle for Solplanet ASW S-G2 and ASW LT

What you need

GridZeno Dongle: The device ID is on the label, e.g. GZ-A1B2C3.
Ai-Logger with software 003R or newer: Connected to the inverter. The version is shown on the Ai-Logger's own page.
Access to your router: To find the Ai-Logger's IP address.
USB power: A 5 V USB charger and a cable with USB-C.

The connection

Solplanet's own logger, which is connected to the inverter with RS485 and to your network. The GridZeno dongle only needs power and network.

Connection: Solplanet Ai-Logger (Modbus TCP, port 9999)

Settings

On Solplanet Ai-Logger

System settings > Communication settings > Network settings > Modbus TCP Port: 9999, which Solplanet states is the default
Slave ID: 239 is used automatically
Settings on the inverter: None. The Ai-Logger itself reads the inverter.

In GridZeno's Welcome

The inverter is chosen in GridZeno: in Welcome the first time, and later under System, Change inverter. The dongle fetches its setup from there.

Manufacturer and model: Solplanet, ASW S-G2 or ASW LT
Connection: Through Solplanet's Ai logger
The Ai logger's address on your network: The Ai-Logger's IP address.

Step by step

Each step has a small drawing that shows what to do.

1
Check the Ai-Logger's port
Open the Ai-Logger's own page, and go to System settings, Communication settings and Network settings. Under Modbus TCP Port, the port must be 9999, which Solplanet states is the default. If it's set to something else, choose User-define Port, enter 9999, press Submit, and wait 10 seconds.
2
Find the Ai-Logger's IP address
Find the Ai-Logger in your router's list of devices, and give it a fixed IP address so it doesn't change.
3
Connect power to the dongle
Plug the USB-C cable into the dongle and the charger into a socket. The dongle starts by itself. It gets power from the charger, not from the inverter.
4
Connect the dongle to the network
Over Wi-Fi: the first time, the dongle creates its own Wi-Fi, GridZeno-Setup- followed by the last characters of the device ID. Connect your phone to it, choose your own network, and enter the password. Over cable (LAN): plug a network cable from the router into the dongle's network port. The dongle must be on the same network as the Ai-Logger.
5
The GridZeno dongle talks to the Ai-Logger
There's no cable between them. They meet in your router, and the GridZeno dongle queries the Ai-Logger every few seconds with Modbus TCP on port 9999. The Ai-Logger itself reads the inverter over RS485.
6
Log in to GridZeno
Log in to GridZeno. Welcome pairs the dongle with its device ID and then asks about your inverter.
7
Choose your inverter in Welcome
Choose your inverter, Solplanet ASW S-G2 or ASW LT, and the connection Through Solplanet's Ai logger. Enter the Ai logger's IP address in the field The Ai logger's address on your network, and press Save inverter. The dongle then fetches its setup and reads from the inverter.

The dongle's own setup is described with screenshots in The user guide, and the pairing in Getting started.

Take care

Don't plug the GridZeno dongle into the inverter's or the Ai-Logger's RS485 ports. The Ai-Logger itself uses its COM ports for the inverters and any energy meter or weather station.

The Ai-Logger only talks to one Modbus TCP device at a time. If you have, for example, Home Assistant connected to it, that connection must be switched off.

A power limit through the Ai-Logger applies to all the inverters it's connected to, not just one.

On the large 150K-LT and 250-360K-HT, the logger is called Ai-Logger 2000. Write to us before you connect the dongle to a system like that, so we can confirm it.

On the 45-60K-LT-G3, COM3 and COM4 are for control by the grid company, not RS485. The Ai-Logger must go in COM2.

This guide requires an Ai-Logger. If you don't have an Ai-Logger, use the guide with RS485 cable for your series. It's next to this one on the Installation page.

What GridZeno can control on Solplanet ASW S-G2 and ASW LT, and how, is on the page about Solplanet ASW S-G2 and ASW LT. If you're stuck, write to us with the model name.

Source

Ports, pins and menus are from the manufacturer's own manual: Solplanet UM0058 Ai-logger Modbus TCP (EN, V03 2024-04) and the user manuals for the ASW S-G2, ASW 5-10k, ASW LT-G2, LT-G2-Pro, LT-G3, 75-150K-LT and 250-360K-HT, Section 1, Brief introduction, section 2.2 (register 1072, Inverter model: PV Single phase and PV Three phase), 2.5, Inverter control mapping table, and section 3, Application Notes.