Toshiba V Series User Manual page 115

Chapter 7 Troubleshooting
7.1 Indications of Operation Status LEDs
The indications of LEDs on each component and their lighting conditions are shown below.
To check the details of error when an error occurs, display the alarm information on the side
display or connect the V Series Engineering Tool 2 and check the error condition with System
View and System Log.
LED Indication
RUN Unit operation
status
HARD Hardware error ON
6F8C1135
Table 7-1 LED indicators on LC51* (1)
ON Conditions
On Online (Board operating
normally)
−
Blink
OFF Waiting for download
HALT
Error down
Normal
Blink Battery error
OFF Exceptional interrupt
WDT error
Bus timeout
Peripheral LSI error
FROM BCC check error
MEMORY R/W check error
User information DL error
All intelligent I/O stations
failed
Remedy
−
Download applications from Tool. To
start control, select RUN mode from
the Tool, or turn power back on.
To start control, select RUN mode
from the Tool, or turn power back on.
After repairs, execute Error Reset from
the Tool, or turn power back on.
−
Replace the battery.
Turn power back on to restart the
system.
If the system does not start normally,
replace the CPU, and restart the
system.
Load the program from the Tool, and
restart the system.
If the system does not recover after
loading the program, replace the CPU,
and restart the system.
Check the IO bus connections.
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