when any of 3 different new rj45 cables are connected to a cebo s or a newly purchased cerbo gx from ve bus to ve bus. multiplus 2 goes into a error code flashing on its display. it will communicate with a mark 3 but vrm portal shows off can be controlled on, charger only, inverter only, off. from victron connect also. mk3 works correctly when connected to pc full access. the multi does not read the smart shunt. here is a video https://www.youtube.com/shorts/FaBVWUqF9ag when ve bus to ve bus is connected. I am trying to get the ac input control to read the smart shunt. I have done many reboot disconnects etc. I thought a new cerbo gx would fix everything but it did not.
That message was sent to the company that sold the multi and the brief answer to my situation is from the tech as follows.
I do see that the Cerbo is reporting on the Console screen that the MP is off, but the MP page shows that it is Inverting. I’ll continue to monitor and troubleshoot this.
Unfortunately, this is a known bug in some firmware versions. The fact that in the Console > Settings > Devices > Multiplus, when I change the Mode from Inverter Only to On and it registers and reports the change here, this is the main sign that it’s a glitch in the Cerbo firmware.
This page also shows the correct AC Out stats and DC stats, that the unit is working as it should.
Neither of these are reporting properly to the main Cerbo page.
This further confirms a UI bug with zero functional impact, although annoying at this point.
ME So now again I am trying to get the multi to read the smart shunt and be able to use the ac input control connect when state of charge is below x % does not work. The multi with ac input activated will respond to voltage when to connect and disconnect.
When any of 3 new rj45 cables are connected ve bus to ve bus I get error but they all work with mk3.
I am hoping a victron tech can test my system remotely before I pay around 150 bucks to send my unit to the dealer.
I am attempting to use widgets to see what data is being transmitted via the mk3 usb because the ve bus to ve bus malfunctions. I have disconnected and re connected so thats where there maybe lost data.
Yes those are not the correct ferrules they are pushed all the way in. I will be upgrading all ac wiring in the future. I removed all mppt connections to eliminate any error for visual aesthetics. Top pic is obviously mk3 then smart shunt in ve direct. Middle pic is where problems start ve bus to ve bus error have tried both lower and upper ports. I will upload some youtube videos. One possibility is that one of the din switches may have been moved by previous owner? I have not looked . I am not the original owner this unit was resold. But it has 5 year warranty.
The video is using ve bus to ve bus only, does not communicate via ve bus to ve bus. will communicate via mk3 but not transfer all data. Can someone suggest a create widget in advanced to test ve bus communications ? And I have powered both cerbos with different batteries separate from system to rule that out. And 3 different rj45 cables.
Why are you using a mk3 to talk to the inverter? You should be using the vebus interface on the Cerbo. A mk3 can only be used to connect a second inverter for monitoring only.
when any of 3 different new rj45 cables are connected to a cebo s or a newly purchased cerbo gx from ve bus to ve bus. multiplus 2 goes into a ve bus error code flashing on its display.
That is completely unclear as to what your issue is. bus to bus is not a phrase that is standardised.
If you want help please be more clear.
Your picture showed a mk3 connected via USB to a Cerbo then to an inverter dbus, something that isn’t typically done beyond a raspberry pi.
LED codes are Vebus error 14 - device unable to transmit data.
### Error 14 - Device cannot transmit data
Most probably a short circuit in the communication cables.
Another possibility, very rare though, is a broken component on the board. Return the device to the nearest service point for repair.
I found the above post after searching for many hours and more hours.
I cut pin 7 wire trying to pull the pin was a pita ,and it works like it should. Tested ac input control and it switched to grid exactly where it should. Ill make sure I share this with the tech that was helping me. Thanks for all comments.
