Easysolar II GX 48/5000/70, as per the title the system has lost visibility of the VE-Direct connected battery monitor corresponding with the point 3 days ago when i updated the GX device to 3.51.
I have tried unplugging and replugging the VE-Direct cable and waiting several hours each time for it to show up.
I am hoping someone here might recognise the problem and point me to the obvious solution 
Often after firmware updates it is worth rebooting a second and sometimes a third time to sort issues like this.
If no joy then go back to the previous stored firmware. If it reappears then raise the issue in the new gui topic.
https://community.victronenergy.com/t/venusos-v3-50-gui-v2-issues-suggestions/9658/99
I have now used a SmartShunt plugged into the VE.direct cable and port that the BMV-700 used. The SmartShunt is seen immediately and its information is incorporated into VRM etc.
The BMV-700 is still in place and still gives very plausible readings on its display. I just can’t get those readings back to the GX device or VRM.
So now I have two VE.direct meters and an EasySolar II GX with only one visible VE.Direct port. If the BMV-700 VE.direct were to work again, is there a way to connect it to the EasySolar II GX?
Use the USB port and a USB/vedirect adapter.
OK, I did that and for a while everything is fine- both BMV-700 (via USB) and SmartShunt (via VE.Direct) show up with their readings etc.
Then suddenly, the SmartShunt disappeared, just like the BMV-700 before it. I can get readings out of the SmartShunt via VictronConnect (Bluetooth). The SmartShunt is on the same Bluetooth network as the SmartSolar, but that doesn’t let the SmartShunt appear in the console, VRM etc.
I have disconnected and reconnected the VE.Direct cable at both ends multiple times, and this has persisted many days. I don’t think I have power cycled the system completely in this new configuration but I certainly did when the BMV-700 was connected via VE.Direct and working (on its LCD) but not showing up in the venus console or VRM.
My GX Device is on software v3.72. MultiPlus firmware is 2623558. BMV-700 is v3.11, SmartSolar is v3.18. I am using a VE.Direct cable supplied by the local Victron distributor so I presume it is not at fault.
Any advice please?
Bluetooth smart networks and a wired GX should not be mixed. Conflicts can happen. I would start by removing smart networking.
I will do that. I did not even look at Bluetooth until after the VE.Direct failed.
If I were to disconnect the VE.Direct wire, would the Bluetooth network provide equivalent functionality- ie data from the SmartShunt appearing in the console & VRM?
No. BT networks are somewhat limited.
Ok I disconnected both the SmartSolar and the SmartShunt from the smart whatever Bluetooth network, despite the SmartSolar indicating that it was receiving SoC data from the SmartShunt (of course that was not visible in the console or vrm).
The SmartShunt did not reappear, despite disconnecting the VE.Direct cable and reconnecting.
So we are really back to the original problem: devices falling off VE.Direct after a while and not re-appearing.
Fair enough. If multiple devices are affected and cabling has been ruled out, maybe you have an issue with the GX. That’s all I can think of.
Who can rule out anything?
It’s a “factory” cable connecting a “factory” SmartShunt to a “factory” Venus GX in the EasySolar. That 2 of 2 VE.Direct devices lost comms without any other kind of failure suggests it was not them, but the cable OR the Venus GX.
Is it just me or are there a lot of similar failings being reported?
Doesn’t the ball fall in Victron’s court?
Can’t say this is seen often. Some strange behaviour was seen with old hardware and newer code which is more resource intensive.
Sometimes there are mods in use.
There is no systemic issue and some persistent weirdness is fixed by fully reflashing the device.
Hardware does occasionally break but that isn’t common.
OK, I have now upgraded all components to the current releases. There are no “mods”- in fact I don’t know what a mod is, please share.
The original problem persists. The SmartShunt is still not visible on VE.Direct.
Still hoping for advice what else to do.
Can only think something has broken in hardware then.
An update can’t cause this.