Bedienungsanleitung Victron Cebro GX (Seite 47 von 59) (Englisch)

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Check 'Last contact'. If this shows dashes, the GX device has not been able to contact the VRM Portal since power up. If it shows

a time, but still an error is shown, then the GX device has been able to send data, but has since lost contact.

The 'Buffered items' indicates the number of logs that it has stored to send later. If this is larger than 0, it means that the Cerbo

GX can not connect to the VRM Portal. All data is sent using the First in First out principle: the VRM Portal will only show the most

up to date information after all old data has been sent.

9.5. Analysing data offline, without VRM

In certain cases, for example for very remote sites where there is no internet available, it can be useful to be able to analyse the

data without first having to upload it to the VRM Portal.

1. Install VictronConnect on a Windows or Apple laptop

2. Insert the storage device containing the log file(s)In Victron

3. Connect, use the GX Log Converter feature to convert them to Excel sheets.

9.6. Remote Console on VRM - Trouble shooting

Follow these steps to trouble shoot Remote Console on VRM

1. Make sure that Logging to the VRM portal works, see chapter 5.4. Without this; Remote Console on VRM will not work.

2. After enabling the Remote Console feature, make sure to set (or disable) the password.

3. Also make sure to restart the Cerbo GX after setting (or disabling) the password.

4. Make sure to update the Cerbo GX to the latest firmware version. The last stability improvement for Remote Console was

made in version v2.30.

5. After the restart, check the Remote Console on VRM status shows online or a port number. In case it says offline, or port

number 0, the Cerbo GX was unable to connect to the Remote Console server. This is normally caused by a (company) fire-

wall, blocking the connection. The solution is then to configure an exception rules in the firewall.

6. -Verify that your web browser, on which you're using VRM, can access both of below URLs. Click both of the links, to check

them. Note that seeing an Error means that all is OK. The good error is 'Error response, Error code 405, Method Not Allowed'.

If you get a timeout or another (browser) error, there may be a firewall blocking the connection. https://vncrelay.victronener-

gy.com & https://vncrelay2.victronenergy.com/

Technical background

To have Remote Console on VRM working, your web browser and the GX Device need to have a connection between them. This

connection is designed such that it doesn't need any special configuration or opening up of firewalls in almost all situations. The

0.1% of situations where it doesn't work out of the box are, for example, large corporate networks with special security, or long

range expensive satellite or radio supported networks, such as seen in rural areas of Africa and other remote areas.

When Remote Console on VRM is enabled, the GX Device will open and maintain a connection to any of the servers pointed to

by supporthosts.victronenergy.com. Which currently resolves to two IP addresses (84.22.107.120 and 84.22.108.49), and likely

more in the future. The technology used is SSH, and it will try to connect using port 22, 80 and 443, only one of them needs to

work. The reason for it to try all three is that on most networks at least one of them will be allowed by the local firewall.

Once connected to one the the supporthost servers, that reverse SSH tunnel is waiting to be connected from someone needing

the connection. Which can be your browser, or a Victron engineer since this same technology is used for the Remote Support

functionality; for more information see above.

Cerbo GX Manual

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