Yaskawa i80M Maintenance Manual - Manual (Page 114)

4.3 TROUBLESHOOTING WITHOUT ALARM CODES (Cent’d)
P o w e r - o f f C h e c k
A check is made at system srartup to see if CMOS
data to be backed up from each CPU was saved
c o r r e c t l y a t p r e v i o u s p o w e r o f f .
This check is performed or not depending on the
system number.
Numbers checked . . .
I
When an error occurs in CMOS, the following alarms
are generated:
ALM3270: power-off error (keep memory)
Power-off error (tool life management)
ALM3272: Power-off error (macro program)
ALM3273: Power-off error (internal memory )
(b) ROM Check
ROM check consists of total check on ROMs of all
w h e t h e r a t s y s t e m s t a r t u p o r a f t e r s t a r t u p .
When an optional function is added, its memory area
is also checked.
This check is performed or not depending on
system number.
When an error occurs in ROM, the board in which
the error occurs, and its ROM number are displayed
106