Toshiba V Series User Manual page 198

Sequence controllers
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(4) Constant check items (periodical check in any mode)
Check item
Peripheral LSI
Checks that
check
peripheral LSIs
operate normally.
LP check
Checks that LP (line
processor) operates
normally.
PCI check
Checks that the
station bus operates
normally.
Flash ROM
Checks validity of the
flash ROM with BCC.
User program
Checks validity of the
memory
user program with
BCC.
User data memory
Checks user data
memory by read-
back.
I/O module error
Checks validity of
each I/O module.
Battery level
Checks voltage drop
of the battery of the
CPU and power
supply modules.
Calendar error
Checks validity of
data (date and time)
read from the
calendar LSI.
Watchdog timer
Checks system panic
error
using the watchdog
timer.
Exception interrupt
Check validity of the
OS program.
Illegal interrupt
Checks illegal
interrupts.
Illegal I/O interrupt
Checks illegal
interrupts from I/O
modules.
Illegal LP interrupt
Checks illegal
interrupts from LP
(line processor).
Momentary DC
Checks validity of DC
interruption
power supply.
Table 6-6 Contact check items
Operation when error
Self-check
is detected
Error down after error
entry
Error down after error
entry
Error down after error
entry
Error down after error
entry
Error down after error
entry
Error down after error
entry
Light failure.
Continues operation.
Light failure.
Continues operation.
Light failure.
Continues operation.
Error down after error
entry
Error down after error
entry
Error down after error
entry
Attention and
continues operation.
Error down after error
entry
Attention and
continues operation.
Operator action
Replace the CPU module
and restart the system.
Or contact a Toshiba agent.
Replace the CPU module
and restart the system.
Or contact a Toshiba agent.
Replace the CPU module
and restart the system.
Or contact a Toshiba agent.
Replace the CPU module
and restart the system.
Or contact a Toshiba agent.
Replace the CPU module
and restart the system.
Or contact a Toshiba agent.
Replace the CPU module
and restart the system.
Or contact a Toshiba agent.
Take action according to the
User's Manual for each I/O
module.
Replace the battery.
Set time using the tool.
Contact a Toshiba agent.
Contact a Toshiba agent.
If this error frequently occurs
(several times a day),
replace the CPU module. Or,
contact a Toshiba agent.
Register interrupt I/O
modules.
Replace the CPU module
and restart the system.
Or contact a Toshiba agent.
If a sign of defective power
supply is detected, replace
the power supply module
and restart the system. Or,
contact a Toshiba agent.

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