Chapter 2. Getting Started with Meteo-42

To use a link-local address, you have to make sure your PC is configured to obtain an IP address automatically. In most cases, this is already be the case.

In the next step Meteo-42 has to be configured for the link-local Ethernet connection. Open the Communication → Devices → LAN menu and select eth0. Move to Method and press the right button on the Meteo-42 keyboard. The > symbol should now change to >>. Now, you can select Link-local by pressing the up or down button. When you are done, press the left button. Figure 2.9, “Meteo-42 display with activated link-local connection”. Note that DHCP is configured by default to support standard LAN (see Section 2.3, “Connecting Meteo-42 via Ethernet to your LAN”) connection via Ethernet.

  IP / Netmask      
  DNS Servers       
  Routes            
> Method: Link-local

Open your browser, e.g. Mozilla Firefox. When you are using a Mac or a Linux computer, or when you have installed Bonjour on a Windows PC, you can just enter https://Dnnnnnn.local in the URL field of your web browser.

Otherwise, look up the IP number in the menu and enter the number as follows https://169.254.nnn.nnn as URL. For link-local connection, IP addresses start always with 169.254., while the remaining numbers are random and change every time.

To use a static IP address, you need to configure both, your PC and the Meteo-42. To configure the PC, open the Network and Sharing Center in the Control Panel of your computer and click on LAN Connection (see Figure 2.10, “Network and Sharing Center of Windows 7™”). In most cases, the link-local connection Section 2.4.1, “Using link-local connection” is preferable.

Figure 2.10. Network and Sharing Center of Windows 7™

To configure the LAN connection, click on Properties (Figure 2.11, “LAN Connection Status”) in the LAN Connection Status window.

Figure 2.11. LAN Connection Status

Select Internet Protocol Version 4 (TCP/IPv4) and open the Properties of the Internet protocol as shown in Figure 2.12, “Properties of LAN Connection”

Figure 2.12. Properties of LAN Connection

Choose Use the following IP address and enter the following IP address 192.168.40.1 as shown in Figure 2.13, “Properties of Internet Protocol”. By pressing the TAB button the Subnet mask will be filled automatically. Save the configuration with OK.

	Important
	If you do not have the rights to configure the settings, contact your system administrator.

Figure 2.13. Properties of Internet Protocol

After having configured the LAN connection, connect your PC with your Meteo-42 using a standard Ethernet cable and switch on your Meteo-42 by pressing the middle button of the keyboard.

In the next step the Meteo-42 has to be configured for the static IP point-to-point Ethernet connection. Open the Communication → Devices → LAN → Ethernet menu and select Ethernet (Offline). Move to Method and press the right button and afterwards the up and down buttons on the Meteo-42 keyboard until Static IP is displayed.

  IP / Netmask      
  DNS Servers       
  Routes            
> Method: Link-local

Open your browser, e.g. Mozilla Firefox. When you are using a Mac or a Linux computer, or when you have installed Bonjour on a Windows PC, you can just enter https://Dnnnnnn.local in the URL field of your web browser.

Otherwise, just enter https://192.168.40.40, where 192.168.40.40 is the preconfigured IP address of each Meteo-42 data logger.

Afterwards a confirmation prompt appears. Click I understand the risks and press Add Exception as shown in Figure 2.15, “Mozilla Firefox Connection Untrusted Alert Page”.

Figure 2.15. Mozilla Firefox Connection Untrusted Alert Page

In the next step download the certificate by clicking on Get Certificate and Confirm Security Exception to access the Meteo-42 web interface. In order to save the exception, Permanently store this exception should be checked.

Figure 2.16. Add Security Exception

After confirming the certificate, the Meteo-42 login page is shown. Use your login details (Meteo-42 certificate) to enter the web interface. To proceed with the configuration, go to Chapter 3, Login at Meteo-42.

Figure 2.17. Meteo-42 web interface initial screen

	Tip
	By using this point-to-point connection (without Internet access), the modem connection can be tested, e.g. sending emails via modem.

	Note
	Do not forget resetting the LAN configuration on your PC (Internet protocol properties) and enabling DHCP on Meteo-42 (if needed).

Unpack the file 20342322_4b9970e3174b23b5cb2371af0837f939a71271ea.cab, downloaded from download.windowsupdate.com by double-clicking on the file icon, then mark both contents, right-click and select then Extract....

Figure 2.18. Unpack Windows Driver Software

Now you have two files, rndis.cat (Security Catalogue) and RNDIS.inf (Setup Information). The former is the digital signature by Microsoft, the latter is the actual device driver file.

Figure 2.19. Select Installation of RNDIS Driver

You probably get the following security warning, which you need to confirm by clicking on Open:

Figure 2.20. Confirm Security Warning

Finally, confirm the success dialog, by clicking on OK:

Figure 2.21. Confirm Operation Successful

The local connection can be established now by plugging in the USB cable. An IP address is automatically assigned to the data logger, which can be found on its display in the menu Communication → Devices → LAN → USB under IP/Netmask. To start using Meteo-42, type the address in your web browser, e.g. https://169.254.12.25/. The address always starts with 169.254, the remaining part is random.

	Tip
	We recommend using Mozilla Firefox as your web browser to access Meteo-42. Other modern web browsers, including mobile web browsers, should work as well, but are not systematically tested by Ammonit.

	Important
	In order to use all functions of the web interface, activate JavaScript and Cookies in your web browser!

After entering the address in your web browser, a confirmation prompt may appear. Click I understand the risks and press Add Exception.

Figure 2.22. Firefox Connection Untrusted alert page

In the next step download the certificate by clicking on Get Certificate and Confirm Security Exception to access the Meteo-42 web interface. In order to save the exception, Permanently store this exception should be checked.

Figure 2.23. Add Security Exception

	Important
	In order to prevent misuse of the certificate, Ammonit deliberately did not store the security certificate on each data logger. After downloading the certificate, its validity can be verified.

Figure 2.24. Meteo-42 web interface initial screen