Edge Relay

Design Overview

An Edge Relay is useful in environments which require the TilliT Edge Core logic to be located inside the OT network. Since the OT network does not have direct access to the cloud, an intermediary TilliT Edge Relay provides this access by forwarding local messages to the cloud and vice versa. If the connection to the IT networked server is severed, then the TilliT Edge Core can still read the local data sources (for example, and OPC-UA server) and will pool messages in a queue until a connection is re-established.

Video Guide

Install the Relay

1. Open TilliT and navigate to Settings -> Edge, then click the create button in the top right

2. Give a name for the Relay and ensure the Type selected is Relay. If you already know the IP Address of the server which will run the TilliT Edge Relay, then provide it in the field. Then click Save

3. You will be prompted to Download the certificates for the Relay Edge, save these files for later.

1. Now, navigate to the Relay Edge you have just created and select Download Edge from the Actions menu

1. Choose the appropriate download for your server. And install the TilliT Edge Agent as per normal

For how to install on Windows See Here

For how to install on Linux/Docker See Here

After installation, check that the Online checkbox next to the edge is ticked and that you have entered the Relay Edge IP Address. You are ready to install the Core.

Install the Core

1. Open TilliT and navigate to Settings -> Edge, then click the create button in the top right.

2. Give a name for the Core and ensure the Type selected is Core. Then select the Relay which this Core will be granted to have access to, this can only be done on creation of the Edge. Then click Save and Download the certificates like before.

1. Open the Edge Core you just created and open the Download Edge page from the Actions menu

1. As we want to use the Core in an offline environment, we cannot use any of the Agent installations. You must choose to download the TilliT Edge Core Standalone for Windows

1. Proceed to install the Windows Edge Core as seen here

2. Confirm the installation has worked by observing a tick in the Online indicator next to the edge and an Online tick next to the Datasource connection if configured.

Troubleshooting

When creating the Core. you may experience the following error

In this scenario, a generic message to check that the Relay device is online and running will be shown as it is a requirement for it to be before the Core can be created. If you are stuck getting the Relay device online, then our Support team will have more information to help.