Mike, I have seen an odd behavior today while at the field.. I gotta say that the last time I was there was on the 9th of April, and I haven't noticed any problem. I had "Prov221C5" installed on my 9XT. Now I have C8 but I see the same behavior. Attached is the model. Nothing changed since last time on the radio (this model), or the model itself. Didn't program anything on the model and also not the oXs.
The only thing i did different was finishing a flight and swap batteries immediately without turning the radio OFF as it was late and getting dark.
So, if i turn the model on after I turn on the radio the first time, all seems OK.
After flying (leave radio ON) disconnect the balance plug that also powers the oXs, I get an alarm on "TmOK<2" that tells me "Serial Connection Lost". This is OK.
But now if I connect a new battery, main plug first, as soon as I connect the balance plug that powers the oXs, i get lowest cell voltage alarm, and FasV alarm.
If i connect the main plug after the balance plug, all OK. But i don't like to do this.
Maybe some timing (delay) issue here??
Oh by the way, another old friend of ours is also back. The "cell 8 bug"
Please check the log file attached. Suddenly i had that low cell voltage alarm. The log shows Cell 8 suddenly showing 3.07V. Ctot and Cvlt go wrong for a while, but then they go back to normal values.. As I said, i didn't touch the model or the oXs. To program the oXs I have to open the model to get to it.. That involve removing some tape.. Anyway, it has been working for a while without problems, and I already flow this model for a few hours after that problem was supposedly fixed by increasing some "SEND DATA" timing in the oXs code..