Bosch D7412GV4 - Page 59

D9412GV4/D7412GV4 v2.03 | Installation and System Reference Guide | 9.0 Off-Board Points
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Table 17: Extra Point Events
An enabled point 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.”
Table 18: Off-Board Point Errors
Error Condition Result Additional Information
+/- leg of the data expansion bus has
a short circuit to earth ground, with
Ground Fault Detect enabled
Ground Fault event
+/- leg of the data expansion bus is
disconnected
All POPITs beyond the
disconnection send Missing
report
Data expansion bus has a short
circuit
All POPITs send Missing
report
Pt Bus Trouble event
When the data expansion bus restores,
Pt Bus Restore event occurs. If any
POPIT is connected to the data
expansion bus without an assigned
Point Index, an Extra Point event
occurs.
+/- leg of the data expansion bus has
a short circuit to the Common
terminal on the control panel
All POPITs send Missing
report
Pt Bus Trouble event
Terminal 26, 28, or 94 has a short
circuit to a Common terminal
No Pt Bus Trouble event
occurs
Terminal 25, 27, or 94 has a short
circuit to a Common terminal
Pt Bus Trouble event
Keypad displays:
SERVC ZONEX 1
Terminals 27 and 28 have a short
circuit together
Pt Bus Trouble event
Keypad displays:
SERVC ZONEX 1