# Initial Commissioning

URL: https://irs.systems/en/docs/mini-pwz-ii/initial-commissioning

## Step 1: Wiring

- The signals to be connected depend on the system environment; the following list represents the minimum.
  - Power supply (+24V Supply/Supply Return)
  - Reference signal (50 Hz Voltage Input)
  - An unsynchronized input signal (Input 0/Input Reference)
  - A synchronized output signal (Output 0/Output Reference)
  - Ethernet via RJ45 connector (for configuration via the WebServer)

![Connection diagram of the MiniPWZ with inputs, outputs, 50 Hz reference, 24 V supply, Ethernet and FD-CAN](/docs/assets/mini-pwz-ii/images/pwz-wiring.png)

> **NOTICE**
> All signals must be connected in the de-energized state. The 24 V power supply should always be switched on first and switched off last.

## Step 2: IP Configuration

### WebServer

We recommend the web interface for setting the Ethernet configuration; see also the previous chapter [WebServer](/en/docs/mini-pwz-ii/webserver).

### DiscoveryTool

1. Select mDNS (Multicast DNS, a protocol for translating IP addresses).
2. Start the module search.
3. Select the module you want.
4. Open the network configuration menu.

![IRS DiscoveryTool with the mDNS selection, module search, module and Ethernet Config highlighted](/docs/assets/mini-pwz-ii/images/pwz-discoverytool.png)

Clicking *Update* writes the changes to the microcontroller and restarts the controller. The configuration window then closes automatically.

![Ethernet Configuration window with current and new configuration](/docs/assets/mini-pwz-ii/images/pwz-ethernet-config.png)

- DNS server: not required for this module
- DHCP/AutoIP: if no DHCP server is available, the module switches to AutoIP (you can find the assigned address by running the search again)

## Step 3: Miscellaneous

We recommend determining the delay times as described in the chapter [Setting the Delay Time](/en/docs/mini-pwz-ii/setting-the-delay-time) and entering them accordingly.