Table 26 Details Of Rack Diagnostics Error Status Messages - Honeywell 900 User Manual

Redundant Overview
Item Status
CPU GOOD
ADDRESS ERROR
PREFETCH ERROR CPU failed when
DATA ABORT
ERROR
S/W INTERRUPT
ERR
UNDEFINED INSTR
ERROR
WATCHDOG
ERROR
VECTOR ERROR
MEMORY GOOD
5 DAY BATTERY
WARNING
LOW BATTERY
Revision 9
May 2014

Table 26 Details of Rack diagnostics error status messages

Possible Cause
N/A
The reserved
exception occurred for
an unknown reason.
attempting to fetch an
instruction from the
prefetch register.
CPU failed when
attempting to access
data.
Software Interrupt
occurred which is not
supported by the
software.
Bad Instruction
Detected
Watchdog reset
resulting from software
failure
Corrupted interrupt
vectors in RAM.
N/A
Estimated battery life is
less than 5 days.
Battery voltage is low.
900 Control Station User Guide
Controller Action
N/A N/A
See PREFETCH
See PREFETCH ERROR.
ERROR.
1. Controller 1. Force a cold start.
performs a restart
2. Isolate system from noise and
2. Associated rack force a cold start.
monitor block's
3. Replace CPU board.
RACK OK pin is
turned off.
3. SYSTEM
MONITOR
block's HW OK
pin is turned off.
See PREFETCH See PREFETCH ERROR.
ERROR.
See PREFETCH See PREFETCH ERROR.
ERROR.
See PREFETCH See PREFETCH ERROR.
ERROR
1. Associated rack 1. Force a cold start.
monitor block's
2. Upgrade controller module
RACK OK pin is
software.
turned off.
3. Replace CPU board.
2. SYSTEM
4. Contact Honeywell Service.
MONITOR
block's HW OK
pin is turned off.
Interrupt vectors
See WATCHDOG ERROR.
were restored.
N/A N/A
1. Associated rack
Replace battery.
monitor block's
RACK OK pin is
turned off.
2. SYSTEM
MONITOR
block's HW OK
pin is turned off.
1. Associated rack Replace battery.
monitor block's
RACK OK pin is
turned off.
2. SYSTEM
MONITOR
block's LOW
BATTERY pin is
turned on.
3. SYSTEM
MONITOR
block's HW OK
pin is turned off.
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