BASIC stamp manual v2.2

XOUT – BASIC Stamp Command Reference
Page 466 • BASIC Stamp Syntax and Reference Manual 2.2 • www.parallax.com
assigned a house code and unit code by setting dials or switches on the
module. To talk to a particular module, XOUT sends the appropriate
house code and unit code. The module with the corresponding code
listens for its house code again followed by a command (on, off, dim, or
bright).
X-10 signals are digital codes imposed on a 120 kHz carrier that is
transmitted during zero crossings of the AC line. To send X-10
commands, a controller must synchronize to the AC line frequency with
50 µs precision, and transmit an 11-bit code sequence representing the
command.
XOUT interfaces to the AC power-line through an approved interface
device such as a PL-513 or TW-523, available from X-10 dealers. The
hookup requires a length of four-conductor phone cable and a standard
modular phone-base connector (6P4C type). Connections are shown in
Figure 5.48.
P0
Vdd
10 k Ω
Bottom of power-line
interface (PL-513 or TW-523)
P1
Vss
1234
Figure 5.48: XOUT Power-Line
Interface Circuit.
X-10 PROTOCOL DETAILS.