From the beginning I was sceptic about plcbus. Seem to have to low transfer rate be useful for anything more than light, relay controls.
I want to be able to interface keypad, lcds etc for control purposes.
The more I think about it, plcbus seem to be the only affordable, yet reliable solution available in europe so far.
I found some information that may be of use for anyone that are willing to write a driver for plcbus.
I can help as much as I can, but I do not now how to program in ruby and it was about 1 years since I programmed in c++.
The following I found on homeseer forum:
The USB - RS232 chipset is Prolific PL2303( same as X10 CM12U usb cable ).
Link to post, http://board.homeseer.com/showthread.php?s=126c471d1c62900350b47ae38eeff355&t=119141&page=2
I also found some more dissapointing news.
It seem that when a user push a light-switch, no status is sent back along the plcbus to a control device. (computer)
See this forum in swedish (unfortunately), http://forum.byggahus.se/teknik/64615-z-wave-plcbus-alternativ-till-eib-ihc.html
In the thread there was also a discussion about a automation@home that are trying to convince the chinese manufacturer to implement feedback functionality in the light switches. I don´t know if it have been implemented yet.
Another way to implement a computer<->plcbus interface may be to use the following module,http://www.plcbus.com/PLCBUS-985468.html
I have not found a datasheet for this one yet but looking at the specs it seem the have 220V powerline interface together with rs-232 and some more interfaces. I believe that this module do not need all the timing that commands sent directly on the plcbus need. Hopefully. I will check with plcbus.com to see if there is any datasheets available.
Will dig a bit more since this technology seem promising and Inteon have not yet developed any products for 220V/50hz even though they have promised me that it would be available during mid 2007.