DCN: 141-00940-09 11/02/07
11
X10 OPERATION
X10 Power Line Interface
The TXB16 Control Unit has an X10 powerline carrier interface that allows X10 commands to be received
and transmitted over the 110 VAC powerline. Commands from remote systems can change the setpoint
temperature and mode of the thermostat. The Control Unit connects to the power line by an external X10
Powerline Interface Module. X10 commands received by the Control Unit are decoded to a new setpoint or
a new mode and are sent to the WDU to update its display. When X10 commands are received, the WDU
will switch it’s display to show the updated information for three seconds and then return to the current
temp display.
The thermostat has an X10 address called a House Code. There are 16 X10 House Codes referred to as
the letters A to P.
X10 House Code Setting
New
with the TXB16, the X10 House Code address,
is now set from the Wall Display Unit
. (If your unit
includes X10 address dipswitch SW1, with positions 5, 6, 7 and 8,
ignore them as they are no longer
used for address selection
. Set the desired house code by the following table. The unit comes with the
X10 address set to 1 for House Code A.
To set the X10 House Code, enter the
Setup Mode
on the WDU by pressing the Mode button and the Fan
button simultaneously. “SU” will be displayed on the WDU LCD display to indicate you are in the Setup
Mode. Press the Mode button again to select “Ad” for X10 Address setting. Use the Up/Down buttons to
select the desired X10 house code using the table below. When done wait for the setup screen to timeout
and return to the current temperature display.
X10 Command Decode Tables
The X10 communications protocol was originally designed to turn lights on and off or dim them. The
TXB16 thermostats responds to X10 commands by
decoding
them into commands to change thermostat
setpoints and modes. As such, there are two types of X10 commands that the TXB16 will respond to: the
more simple
Unit Code commands
(32 commands), such as “A1 ON” or “A1 OFF” which are
receive
only
commands; and the more robust
Preset Dim commands
(512 commands)
,
such as “A4 Preset Level
6%” which are bi-directional (received and transmitted by the TXB16).
WDU Address
X10 House Code
1
A
2
B
3
C
4
D
5
E
6
F
7
G
8
H
9
I
10
J
11
K
12
L
13
M
14
N
15
O
16
P
X10 House Code Address Setting Table
