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mk1 avatar image
mk1 asked

10 m of VE.Can to CAN-bus BMS type A Cable ??

Victron has only 5 m original VE.Can to CAN-bus BMS type A Cable.

How to do by myself this cable ? I need 10 m.

VE.Can
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bluewally avatar image bluewally commented ·

I have the same chanllenge, and ordered two 5 meter cables. But the distributer tells me it is not possible to connect the 5 m VE Can - Can bus BMS with a simple RJ45 extender. I really liked the solution. Can you confrim it did work for you. Thank you

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Matthias Lange - DE avatar image Matthias Lange - DE ♦ bluewally commented ·
We already did that a few times without problems.
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bluewally avatar image bluewally Matthias Lange - DE ♦ commented ·
Super thanks!
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delf67 avatar image delf67 bluewally commented ·
To clarify, it will not work if join 2 Victron type A cables together, you need to join 1 Victron type A and 1 standard ethernet cable.
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Matthias Lange - DE avatar image Matthias Lange - DE ♦ delf67 commented ·
I don't think that will work with two type A cables.

The 2nd one will mix up the pins.

You need to use a normal straight patch cable.

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delf67 avatar image delf67 Matthias Lange - DE ♦ commented ·
Yes, that is what I said.


The OP said he had ordered 2x 5m Victron type A cables, and the distributor told him it wouldn't work. I was agreeing.
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bluewally avatar image bluewally Matthias Lange - DE ♦ commented ·
Thanks for the clarification. I bought a standart ethernet cable, do I need to make any adjustments to that cable? What do you mean with patch cable. Sorry not very knowledgable about cables. Thank you


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delf67 avatar image delf67 bluewally commented ·

No adjustments. The connections will look like this:

CAN Port--5m ethernet cable--ethernet joiner--5m Victron type A cable--BMS Port

Effectively the 5m ethernet cable plus the ethernet joiner just moves your CANBUS port 5m closer (without swapping any pins) and then the Victron type A swaps the pins to the correct position to connect to the BMS port.

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2 Answers
Matthias Lange - DE avatar image
Matthias Lange - DE answered ·

https://www.victronenergy.com/live/battery_compatibility:can-bus_bms-cable#introduction

You can also use just a RJ45 extender and another 5m patch cable.

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wkirby avatar image
wkirby answered ·
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