> For the complete documentation index, see [llms.txt](https://docs.voltmasters.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.voltmasters.io/device-integrations/pv-inverters/huawei/huawei-smartlogger-3000.md).

# Huawei Smartlogger 3000

### Enable Modbus TCP

To activate Modbus, log in to the web interface as **Installer** and navigate to:

**Settings → Comm. Param → Modbus TCP**

Then set **Link Setting** to **Enable (Limited)** or **Enable (Unlimited)**.

* **Enable (Limited):** you must add the specific IP addresses that are allowed to access the system via Modbus. Only these IPs will be permitted.
* **Enable (Unlimited):** any IP address can access the system via Modbus.

<figure><img src="/files/HlVcfLhjd8Sa8PSQ8aAR" alt="Limited setting view Huawei Smartlogger 3000"><figcaption><p>Limited setting view for the Huawei Smartlogger 3000</p></figcaption></figure>

<figure><img src="/files/3NiNiNJzxdsbHnzKEP9T" alt="Unlimitted view for the Huawei Smartlogger 3000"><figcaption><p>Unlimited setting view for the Huawei Smartlogger 3000</p></figcaption></figure>


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