I am awaiting the arrival of my 2406H phase coupler, which I hope will solve my Insteon communication issues which I posted about before. In the meantime, I am trying to read up on Insteon to better understand the technology. I read the publication "Insteon Whitepaper: The Details" and still have many questions....
In the protocol, what is point of the Max Hops field? Seems the originator of a message could just set the initial value of the Hops Left field to something less than 3 if it wanted to limit the number of hops a message makes. What is the point of groups? If each device is to respond with an ACK message using a "group cleanup direct message", it seems the total time to transmit a direct message to each device and get acknowledgement would be the same. I'm still confused about linking and groups. For example, how does a switch (controller) tell another switch (the responder) that it wants to link as a certain group number? Can I link as a point to point (from a specific address to a specific address)? If so, how do I do that with 1 button on each device? What is a "scene" and how is it different than a group? When using the PLM and ISY994i, should I press the link button on the PLM when linking to devices? Specific question about the 994i: What is the best way to "wipe the slate clean" as far as starting over with Insteon? I want to keep my programs and assigned X10 devices but want to start from scratch with the Insteon. I have three Insteon responders (2 lamp linc and 1 on/off module) that I have tried to get working with two different PLMs. I'm thinking these devices are screwed up now and I just want to make them behave like they did out of the box.
I still have much to learn on Insteon. I appreciate any help or insight anyone reading this may have. If there are more documents out there, please provide links if you have them. I'm not afraid of technical details - I have an EE degree and have spent almost 40 years designing software and firmware for embedded devices.
Thanks,
John