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D9412GV3/D7412GV3 | Operation and Installation Guide | 9.0 Off-Board Points
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Bosch Security Systems, Inc. | 10/10 | F01U143070-03 36
9.0 Off-Board Points
9.1 Point (Zonex) Bus: D9412GV3
Terminals and D7412GV3
Terminals
9.1.1 POPIT Modules
The D9412GV3 can use point of protection input
transponder (POPIT) modules to provide a maximum
of 238 off-board points, bringing the total number of
points the D9412GV3 can monitor to 246. The
D7412GV3 provides up to 67 off-board points,
bringing the total number of points the D7412GV3
monitors to 75. Each off-board point requires a POPIT
Module.
The expansion bus can be shared
between fire and non-fire devices where
the POPIT module provides data isolation
between the input and the bus
connections.
9.1.2 POPEX Modules
POPITs connect to supervised two-wire data
expansion loops run from POPIT to POPIT throughout
the premises. Data expansion loops connect to a
D8125 Point of Protection Expander (POPEX)
Module. POPEX Modules have power and data
connections to the point bus on the control panel
(Table 10).
Table 10: POPEX Modules
Model Power Data
D9412G Terminals 23 and 24
Terminals 25 and 26
or
Terminals 27 and 28
D7412G Terminals 23 and 24 Terminals 27 and 28
9.1.3 Missing Conditions
If a programmed POPIT is disconnected from the
expansion loop, a missing condition appears
immediately and the event is logged. The missing
condition might also be sent to a central station or
printed to an on-site printer, if programmed to do so.
Refer to the D9412GV3/D7412GV3 Program Entry
Guide (P/N: F01U170807) for programming options.
9.1.4 Extra Point Events
Extra Point events are generated when a POPIT
connected to the data expansion bus does not have
an assigned Point Index. Table 11 shows when an
Extra Point event is or is not generated. Table 12 on
page 37 shows additional error conditions that can
occur for the off-board points.
Table 11: Extra Point Events
A POPIT connected to the data
expansion bus does not have an
assigned Point Index and: Extra Point event? Additional Information
Data expansion bus is disconnected No
Keypad does not annunciate or display a trouble
condition.
Data expansion bus restores to
normal condition after an open
condition
Yes
Keypad annunciates and displays a trouble
condition
Extra Point is logged and might be programmed to
send reports to the central station or to an on-site
printer.
Point input changes status from
normal to open or shorted
No
Keypad does not annunciate or display a trouble
condition.
During a Service Walk Test, the point
input changes status from normal to
open or shorted
Yes
Keypad annunciates and displays a trouble
condition
Extra Point is logged and might be programmed to
send reports to the central station or to an on-site
printer.
The Service Walk Test never shows the electrical state of a point as “Extra.”