Two UD Devices with PLMs On The Network Conflict

[theitprofessor]

OK I’m not sure which topic this belongs under so I’ll start with it here since the issue started when I introduced my new Eisy into the network.  I have a Polisy Pro and Serial PLM running IoP in production using the portal and PG3.  I brought a new Eisy online yesterday with a USB PLM plugged into the same electrical network.  This caused my Polisy PLM to go offline.  I thought they could coexist.  Nothing is linked to the Eisy PLM at this point.  Here is the even more interesting part.  I unplugged the Eisy PLM from the electrical network and rebooted the Polisy and still it’s has its PLM offline.  It was only when I powered off the Eisy completely and rebooted the Polisy that its PLM came back online.  Has anyone seen this before or is this a known incompatibility?

Edited April 23, 2023 by theitprofessor

[MrBill]

3 minutes ago, theitprofessor said:

I thought they could coexist.

they can.  I have two insteon networks in my house, one is just a test network, but they co-exist fine.

Not sure what the problem at your place is, but they should coexist.

[DennisC]

I'm also running a Polisy and eisy at the same location without issues.

[theitprofessor]

Yup, now it's working for me too.  I don't understand what triggered this.  It's so weird.  I plugged everything back in and restarted both after they came up and now everything is working fine.  I've started a detailed log of times and actions to see if I can pin down what may actually cause this if it even happens again.  I noticed the issue the first evening when certain programs were not working and they should have been.  I did some poking around and saw one of the PLMs was offline.  And here's the really, really, weird part.  When I was having the issue I saw the PM ID of the one that was working from the AC as being the PLM of the other unit.  I immediately said "what, that can't be", did I plug them in wrong?  So I triple checked Layer 1 and when in and out of the AC for both a few times and made absolutely sure which AC I was in.  It's not that easy to make a mistake "for me".  One PLM starts with a 4 and is serial having different cabling of the other which starts with a 5 and is USB.  And, one AC is loaded with devices and the other has nothing in addition to Help > About, clearly telling me where I am.  No I'm not crazy, it was really happening, I'm positive.  The only way I could solve the problem was to completely power off the Eisy and restart the Polisy and everything returned to normal.  The next day I brought them both back online and everything is now working the way it should.  I don't get it.  It's my understand these two boxes in no way shape or form talk to each other locally, so then that leaves only the portal or UDM and UDM just uses the portal from my understanding.  So the only thing that makes any sense to me was something funky weird going on with the portal that night.  Some sort of crosslink going on that would cause me to see a device from one box in the AC of the other.  No Michel, I'm not blaming UDI.  Everything is now working fine but I thought I would explain this here, now, in case it ever happens again or someone else experiences something similar.