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Cerbo GX, REC Q-BMS Victron, WS500

This is a marine application with a Cerbo GX connecting several networks

REC Q-BMS Victron on the BMS-Can at 500 kbs

Two WS500's on the VE-Can at 250 kbs

Two Quatros on the VE-Bus

The VE-Can is also connected to the ships N2K network via "VE.Can to NMEA2000 cable"


This setup works awesome with one exception; the WS500s don't see the BMS. However, everything else does! The Quatros, everything on the N2K network and I can alarm anything I want from the BMS on the central Maretron system.


If I switch the BMS to the VE-Can (@250 kbs) and the WS500's work great. But I have to disconnect the Cerbo from the N2K network and lose all the central monitoring and alarm function. The REC BMS has a terminating resistor built into it. The N2K back bone already has terminating resistors at the ends of it.


I would prefer to keep the BMS on the BMS-Can. Does the Cerbo not translate everything from one bus to the other?

My second choice would be to defeat the resistor in the REC BMS somehow. But I want to make sure I don't have another option.


cerbo gxBMS
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kevgermany avatar image kevgermany ♦♦ commented ·
Sounds as if you should be looking at the WS500 bus speed.

From memory, CAN doesn't support mixed speeds, but I may be wrong.


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