Hey I just wanted to report some odd behaviour I have seen on old v1 Mango ES's, by v1 I mean the really old big housing ones. I have a couple of these out here, both running 2.8, and I updated both of them to the latest module versions within the last month. Both of these devices have experienced odd loss of comms to a MODBUS/RTU slave. I only went to the one site but from what I could see the RS485 port had lost it's mind a little bit. For some reason it was showing two RS485 ports (dev/rs485 and something else like dev/ttla). That one I fixed up by rebooting but I have never seen that before. Both of them lost comms to their respective RS485 modbus slaves yesterday again but then both recovered at some point during the day. They are not in the same building and it was not an ethernet comms issue because my ES's were still publishing data, it was just not incrementing.
Just wanted to pass that along in case you've seen something like this. If it happens again I will try to troubleshoot a bit more. Is there anything I should try specifically which would help you?