Status Led Indication - Toshiba V Series User Manual

Chapter 5 Troubleshooting

5.1 Status LED Indication

Status
Indication
LED
RUN Operation
mode
5
HARD Hardware
error
SOFT Software
error
70
Table 5-1 shows the condition under which each status LED on the L3 CPU module front
panel lights. To confirm the detail of each error, connect the engineering tool to the L3
controller.
Table 5-1 Status LED Indication on L3 CPU Module
Status
ON Normal (RUN)
−
Stop (HALT)
−
Error rundown (ERROR)
ON Normal
Biln Abnormal battery
king
Fan shutdown detected
Abnormal temperature detected Check that the air inlet of fan unit is not blocked. Check that
Disconnected duplex tracking
cable detected
−
Exception interruption detected Turn on the power again to restart the controller. If error
Watch dog timer error
Memory R/W check error
Data memory ECC error
Data memory parity error
Flash ROM BCC check error
Memory lost
Code memory DL error
User information DL error
All intelligent I/O channels
failed
ON Normal
Biln Main task jammed
king
−
User task stop boundary over
User task stop illegal instruction
detected
User task stop POU number
undefined
User task stop arithmetic stack
error
For analysis of error cause using the engineering tool, refer to Section 5.2 "Trace
Function". For trace information, refer to Appendix C "Table of Trace Information".
Actions to be taken
−
To resume control, change the operation mode to "RUN" using
the engineering tool or the mode switch, or turn on the power
again.
Remove the cause of error, and reset the error status using
the engineering tool. Then change the operation mode to
"RUN", or turn on the power again.
−
Replace battery.
Disconnected fan cable is suspected. Check cable
connection. Replace the fan unit.
operation temperature is within the specified range. Lower the
room temperature by turning on the air-conditioner of the room
in which the controller is installed.
This problem can occur on the controller in duplex
configuration. Replace duplex tracking cable, and boot the
standby L3 CPU module.
cannot be eliminated, replace the L3 CPU module.
Clear the memory, download program from the engineering
tool, and restart the controller.
2
Format the E PROM to clear the memory, reload the user
application, and restart the controller.
Download program from the engineering tool, and restart the
controller.
Check serial bus cable connections.
−
Increase main scan cycle, or decrease the program volume
for main scan tasks.
Clear the memory of L3 CPU module, and download
application program again.
Set POU number of function block or function in the normal
range, carry out compilation using a caller project, and
download application program again.
After completing compilation normally, download application
program again.
model 3000 Loop Controller L3 User's Manual - Basic Hardware -