Toshiba T2N - Manual (Page 133)

5.RAS Functions
120 PROSEC T2N
Calendar LSI check The accuracy of the data read
from the calendar LSI (date and
time) is checked, the data is set
in the special register. Alarm. Until the calendar is
reset, the date and time data (in
the special register) are HFF.
Battery check The voltage of the memory
backup battery is checked. Alarm. If the user program
memory BCC is normal, it starts
up normally.
(However, user data without in
retentive memory specification
is not guaranteed.)
(2) RUN start up diagnostics
Diagnostics Diagnostics details Processing when error detected
I/O verify check The I/O allocation information
and the I/O modules mounted
are verified, to check that they
agree. Error registration, error down.
However, when start up is
activated by a command from
the programmer a message is
displayed, it remains in HALT
mode and no error registration
takes place.
I/O bus check Checks that I/O bus is correct. Error registration, error down.
However, when start up is
activated by a command from
the programmer a message is
displayed, it remains in HALT
mode and no error registration
takes place.
I/O response check Checks that response when I/O
module is accessed is within
specified response time limits. Error registration, error down.
However, when start up is
activated by a command from
the programmer a message is
displayed, it remains in HALT
mode and no error registration
takes place.
Program check User program syntax is
checked. Error registration, error down.
However, when start up is
activated by a command from
the programmer a message is
displayed, it remains in HALT
mode and no error registration
takes place.
(3) Diagnostics during scanning
Diagnostics Diagnostics details Processing when error detected
I/O bus check Checks that I/O bus is normal.
(at batch I/O processing) Error registration then error
down. (However, after a fixed
number of retries, only
registration takes place; no error
down.)
I/O response check Checks that response when I/O
module is accessed is within
specified response time limits.
(At batch I/O processing and at
direct I/O instruction) Error registration then error
down. (However, after recovered
by retries, only registration takes
place; no error down.)