I have a Cerbo GX, SmartSolar, SmartShunt, and Multi. Using VE.Direct, I'm trying to get the MPPT and shunt into the cerbo, with no success.
My cables follow the guidelines in the "VE.Direct Protocol" PDF found at https://www.victronenergy.com/support-and-downloads/whitepapers (this information should be in the manual, I believe):
1->1
2->3
3->2
4->4
ie this is a null modem cable with a connected power pin.
I can see that the table in that PDF also shows the fields that are transmitted over the line by each device, but only details the BMV 600, BMV 700, MPPT, and Phoenix Inverter, Charger. It does not include the SmartShunt.
Should I expect that the SmartShunt implements the BMV700 values?
As my Cerbo does not appear to see either the MPPT nor SmartShunt, I will put a scope on the TX pin tonight to verify output activity (I understand that at least the MPPT has the potential to re-use the TX/RX pins as digital outputs for PWM/charger control - that to me is frustrating that the design didn't just add two extra pins to provide that instead of multiplexing them)
I have enabled root access on the Cerbo, but I'm not sure where to look to find if serial activity is being detected. I also downloaded the VenusOS code from github to see if I could read the code and learn more about where this element of the system is handled, but haven't found anything yet.
Any clues appreciated
