# Setting Showstopper Node ID

We now need to make an important distinction here. The IP Address is not the identifier for the E-Stop Button on the Showstopper 4 Base.

{% hint style="success" %}
The identifier for the E-Stop Button is called the E-Stop ID (Node). Each Showstopper 4 device needs a unique E-Stop ID from 0-127.
{% endhint %}

This means the maximum number of addressable E-Stop buttons in any system is 128.

To set your E-Stop ID on your [Showstopper 4 Base](/docs/showstopper/showstopper-base.md):

* **Press** the **knob** to open the Showstopper configuration menu.
* **Turn** the **knob** clockwise until the screen displays >**SET BUTTON ID**. **Press** the **knob** and the **SET E-STOP ID** screen will be displayed (below):\
  ![](https://lh3.googleusercontent.com/v-WX5AzvbBfiigN5AjX1p1QTXy5vSJHw1d7elb1yfYSU8cQUbIvU4_x6ECVTWghRQN1tSAucAHKg8cKR2joc1Q17FWusUULT3El3vKor7lnZzluFVIE9qQxksAWyozX6KzyJCOb6=s0)
* **Turn** the **knob** and scroll the cursor to highlight the NEW ID number and press the knob to select the field.
* **Turn** the **knob** to set the **new ID** and **press** the **knob** again to accept the new value.
* **Scroll** the cursor over to the **OK** and **press** the **knob** to **set** the new E-Stop ID, and return to the primary screen display.

{% hint style="warning" %}
If you want to cancel the changes you made to the E-Stop ID, scroll the cursor over to the CANCEL and press the knob
{% endhint %}


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.creativeconners.com/docs/spikemark/ip-address-and-network-connection/setting-showstopper-node-id.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.