question

Noisy Boysie avatar image
Noisy Boysie asked

RS485 cable query

Am I understanding this correctly?


The RS485 victron cable does not have a rj45 attached to the end and I need to add it my self using only the orange, yellow and black wires?


What do I do with the other colour wires?


Thanks


Mark Boys

ESSEnergy Meter
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3 Answers
Noisy Boysie avatar image
Noisy Boysie answered ·

Ok found the answer buried in the doc

https://www.victronenergy.com/live/energy-meters:start


The new meters have 2 RJ45 sockets for the Modbus RS485 connection. But they are not used. Note the possible confusion because of yet another RJ-45 socket in the Victron world though. Don't mix that with VE.Bus, VE.Can or VE.net. Besides the RJ-45 sockets, the meters still also have screw terminals access below the sockets for the RS485 wiring, which is how we advise to connect a meter to the RS485 to USB interface and then CCGX.

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ejrossouw avatar image ejrossouw commented ·

Glad to hear. If you are connecting to the e.g. ET112, you can use same pinouts and use either RJ45 ports. I however opted to hide the cable and used the screw connectors in the end.

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ejrossouw avatar image ejrossouw commented ·

https://gavazziautomation.com/images/PIM/MANUALS/ENG/ET112_IM.PDF

"NOTE: All the Modbus ports (screw terminals, two RJ45 and optical) are in parallel. Only one port at a time can be used."


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ejrossouw avatar image
ejrossouw answered ·

There is a wealth of information if you do a quick search. https://www.victronenergy.com/live/energy-meters:et112

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michael2019 avatar image michael2019 commented ·

The question I asked has nothing to do with energy meter. The link you sent is all bout energy meter. Thanks

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michael2019 avatar image
michael2019 answered ·

Good day. Please can I use this cable (USB-RS485-WE from Victron) to query BYD 13.8 through the RS485 Port of the BMS? If yes, how can I terminate the 6 cables to RJ45 port?


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