Establish a config connection

1. Necessary equipment

• Computer running Windows, Linux or macOS
• Micro-USB cable

Note for ICC1324 owners

The ICC1324 requires a USB-B 2.0 cable instead (also known as printer cable).

2. Connecting your computer through USB or Ethernet for initial configuration

tip

Connecting through USB is recommended.

USB

1. Make sure the Charge Controller is ready (refer to the LED status reference)
2. Plug the appropriate USB cable into the Charge Controller's CONFIG port and connect it to your computer
3. Open http://192.168.123.123 through your web browser

You should now be met with the Config UI or Legacy Config UI based on your current settings.

Ethernet

Static IP

1. Make sure the Charge Controller is ready (refer to the LED status reference)
2. Make sure the Charge Controller and your computer are on the same Local Area Network (LAN) or the Charge Controller is directly connected to your computer through Ethernet
3. Open http://192.168.124.123 through your web browser

You should now be met with the Config UI or Legacy Config UI based on your current settings.

Advanced info

Setting a static IP address on Windows 10/11

Follow the official guide by Microsoft for this.

Fallback method

To enable a configuration if both described ways aren't suitable, a permanent, static, second IP address is available on the Ethernet interface of the Charge Controller.

To access the Charge Controller via this address, you have to set your PC's IP address to the same address space and subnet mask.

Example configuration:

Parameter	Value
Address	192.168.124.100
Subnet mask	255.255.255.0
The Charge Controller's IP address	http://192.168.124.123

DHCP

1. Make sure the Charge Controller is ready (refer to the LED status reference)
2. Make sure the Charge Controller and your computer are on the same Local Area Network (LAN)
3. Open the IP address set through your DHCP-enabled router. Check your router settings to determine the IP address

You should now be met with the Config UI or Legacy Config UI based on your current settings.

tip

If unsure about the wiring, refer to your Charge Controller's handbook.

2.1. Troubleshooting

Try the following in case you run into problems:

• Make sure the Charge Controller is ready before accessing the Config UI. Refer to the LED status reference to determine the Charge Controller's status.
• Try a different USB port on your computer

Next try to determine the root cause by process of elimination:

Symptom	Possible cause	Check
Opening http://192.168.123.123 in the browser leads to a timeout or 404 error (Not Found)	Faulty USB cable	Use a different cable or connect a different device, e.g., a working Charge Controller, through the USB cable and check if the device has been recognized by the computer
	Faulty USB port on the computer	Try connecting the Charge Controller through a different port and check if the device has been recognized
	Faulty Charge Controller	Try a different Charge Controller, if that works but the original Charge Controller keeps failing, the Charge Controller might have to be replaced.

3. Further reading

• Advanced networking guides