As some of you may be aware I am studying the smart home as part of university dissertaion, search my other posts for more background, Anyway I have been doing research into the transmisiion theory behinf the X10 protocol. As I understand the x10 CM12U sends an 11 digit binary code around the power circuit,
picture from http://www.x10.com/technology1.htm
see here for full X10 transmission theory!
http://www.x10pro.com/pro/ppt/x10works.pps
anway, the way it looks to me and the way that it expalins it is that it either sends a number code (being the device number of the reciever module) OR a function code (on/off) surely it needs to send bothe of these values firstly the number so it knows which device its sending it too and then the function code so it knows which action to take, I looked over the transmission theory the whole of yesterday and could not figure it out. I am also a little confused about the power situation. I pressume this is all american as in UK I thought we used 240v power sockets!
any help appriciated!
Stu
picture from http://www.x10.com/technology1.htm
see here for full X10 transmission theory!
http://www.x10pro.com/pro/ppt/x10works.pps
anway, the way it looks to me and the way that it expalins it is that it either sends a number code (being the device number of the reciever module) OR a function code (on/off) surely it needs to send bothe of these values firstly the number so it knows which device its sending it too and then the function code so it knows which action to take, I looked over the transmission theory the whole of yesterday and could not figure it out. I am also a little confused about the power situation. I pressume this is all american as in UK I thought we used 240v power sockets!
any help appriciated!
Stu
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