question

kettil avatar image

Multiplus 1200 stopping when connected to Cerbo GX

I am trying to connect a Multiplus 1200 to a Cerbo GX


When i connect the Ve.bus to the Cerbo the Multiplus stoppes working. It immidiately goes up again when the cable is taken out of the Cerbo. What am I doing wrong ?

cerbo gx
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Same happened to me.bad Ethernet cable on my end. But the inverter lights started blinking on my case.

2 Answers
roger-gregory-allen avatar image
roger-gregory-allen answered ·

@Kettil and others,

This is an old question, but in case someone searches for this...

I had exactly the same issue. It turned out that I was plugging the RJ45 cable from the Multiplus (which is VE.Bus; NOT Ethernet), into the Ethernet port of the Cerbo. Plugging in to one of the Cerbo's VE.Bus connections (below the Ethernet port) eliminated the problem.

Presumably there is something in the difference between VE.Bus and Ethernet signaling that causes the Multiplus to go into a failure mode (which did not match any of the documented LED flashing signals). The odd part is that I was pretty certain that it *had* worked for a short while when plugged into the Ethernet port earlier. Either I was just mistaken or it took some time for the issue to manifest the first time.

In any event, I went from "Multi always fails when Cerbo plugged in" to "Everything works as expected" by moving the cable from the Ethernet port to the VE.Bus port.

I hope this helps someone.
--Roger

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Thank you for your suggestion, an old question but very relevant to newbies like myself which had the same issue.

Daniël Boekel (Victron Energy Staff) avatar image
Daniël Boekel (Victron Energy Staff) answered ·

Hi @Kettil

can't you turn it on from the Cerbo menu?

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Actually I have to check that. I did not see if the Multiplus ever showed up in the Cerbo Menu

Hi, I have now tested it again. When the mMultiplus is connected to the Cerbo it just dies. No way to get any connection to it

did you find a solution? I have exact the same problem over here