Serial Tunnelling - Brainboxes ES Series Product Manual

Serial Tunnelling

Brainboxes Ethernet to Serial industrial devices have a feature called serial tunnelling. Serial
tunnelling connects two devices together to create a serial tunnel which extends the serial link over an
Ethernet connection. When serial data is sent, it is converted to Ethernet packets by one ES
industrial device, transmitted over the network, then unpacked and converted back to serial data by
the other ES industrial device. An example of tunnelling is shown in the diagram below.
Serial tunnelling is set up using the webpage interface. In the following instructions there are two
devices which are referred to, the local side which is the device that you are connecting from, and the
remote side which is the device you are connecting to.
1. Open the web configuration page of the Local ES Device using a web browser.
2. Navigate to the page of the serial port you want to use to tunnel.
3. At the bottom of this web page is the device tunnelling section.
4. To connect tunnelling tick the "Enable" checkbox and select if you want the device to be
master or slave. Enter the Remote IP Address and Remote TCP Port number of the ES
device you want to connect to and tick the 'Enable' check box.
5. Click 'Apply Changes' button and you will be taken to a page which will display a success
page. You will be redirected to the port page after the countdown timer has finished.
6. The devices will now be in tunnelling mode.
7. On the local device port webpage you will see the device tunnelling section with two buttons,
'Disconnect' and 'Stop Tunnelling'. The 'Stop Tunnelling' button will disconnect the ports on
the remote and local side and put both of the devices to an idle state. If the 'Disconnect'
button is clicked the remote side port will be disconnected and go into the idle state, but the
local side will remain in tunnelling mode.
ES Industrial Range
Product Manual V3.3
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