Product manual

Maintenance, Test and maintenance software
Technical Product Manual - DCT1800-GAP
TD 92093 (1/LZBNB 103 108 R4D) / 2006-03-09/ Ver.C
© 2006
10
Relative counters
A relative counter counts all resets since the power-on. The counter is cleared each time the power
is cycled or at a CPU reset (button or watchdog). Relative counters have a threshold level. When the
threshold level is exceeded, a general alarm with fault code 3 is generated. Relative counter values
are halved every 24 hours.
Counters for CPU
The CPU board has the following counters for CPU circuits:
Absolute counters
– Power on reset increments at every power on
– Watchdog reset increments at every unexpected CPU watchdog reset
Relative counters
– HSCX reset increments at every HSCX reset
– HDLC A reset increments at every HDLC A reset
– HDLC B reset increments at every HDLC B reset
– 8031 (BC) reset increments at every 8031 reset
Counters for board controllers
The CPU has the following counters for board controllers:
Absolute counter : increments on all type of resets, see table 1
Relative counter : increments at error (T&M reset/BC)
increments at board insertion (Backplane reset)
Counters for peripherals
The CPU has the following counters for peripherals:
Relative counter: increments at error (T&M reset/P)