2 712-8INT INSTALLATION GUIDE | DIGITAL MONITORING PRODUCTS
3To communicate the status of the eight zones, the
module responds to two addresses on the Keypad
Bus and eight addresses on the LX‑Bus. You can set
the module starting address to any bus address from
0to 15. The module automatically responds to this
address, the next address on the Keypad Bus, and the
next seven addresses on the LX‑Bus.
To change the current address, move the slide
switches to the appropriate address positions
according to Figure 4.
Keypad Bus Addressing
The module can be set to the following keypad
addresses according to panel model: 1through
8for XT30INT/XT50INT and XR150INT Series
panels, or1through 15for XR550INTSeries panels.
Additionally, the eight zones on the module occupy two keypad addresses.
For example, if the module is set to address2, the first four expansion zones occupy address 2and respond
as zones 21‑24. The last four expansion zones occupy address 3and respond to the panel as zones 31‑34. For
more information about Keypad Bus addressing, refer to Table1.
Note: Because the 712‑8INT is supervised, both addresses must be selected in Device Setup of the
XR150INT/XR550INTSeries programming when used on the Keypad Bus.
LX‑Bus Addressing
When connecting to the LX‑Bus, the module must be addressed to match the last two digits of the
first zone being used. The next seven zone addresses are automatically used to communicate expander
zones2through8status.
For example, on an XR150INTpanel using LX‑Bus 1if you set the module address to8, the eight zones on the
expander respond as zones 508to 515. When connected to an XR550INTpanel using LX‑Bus 2, the zones
respond as 608to 615. For more information about LX‑Bus addressing, refer to Table2.
Note: Only two 712‑8INT Modules can be connected to each LX‑Bus.
ADDRESS THE MODULE
Figure 3: Wiring Diagram
Z1 Z2 Z3 Z4 Z5 Z6 Z7 Z8GND GND GND GND
TXD
BLK
BLK
RED
RED
712-8INT
AC
1234 5 6 7 810 11 12 13 14 15 16 17 18
9
+B BELL GND SMK GND
RED YEL GRN BLK Z1 Z2 Z3 Z4 Z5
20
Z6
AC -B GND
19
GND
21
Z7
22
GND
23
Z8
24
Z9
25
Z10+
26
Z10-
RED
PROG
XT30INT
To other zone
expansion modules
on the same bus.
1K EOL 1K EOL
1K EOL
1K EOL
1K EOL
1K EOL
1K EOL
1K EOL Zone 1
Zone 2
Zone 3
Zone 4
Zone 8
Zone 7
Zone 6
Zone 5
Use supplied 1K EOL resistors on each zone.
Normal operating range is 650-1200 Ohms
These 4-pin headers are connected
together internally to allow bus
connection of other zone expansion
modules.
ADDRESS KEYPAD
LX-BUS
1 2 3 4
5 6 7 8
9 10 11 12
13 14 15 16
ON
1 2 3 4
ON
1 2 3 4
ON
1 2 3 4
ON
1 2 3 4
ON
1 2 3 4
ON
1 2 3 4
ON
1 2 3 4
ON
1 2 3 4
ON
1 2 3 4
ON
1 2 3 4
ON
1 2 3 4
ON
1 2 3 4
ON
1 2 3 4
ON
1 2 3 4
ON
1 2 3 4
ON
1 2 3 4
Figure 4: Addressing the Module