Chapter 12 Troubleshooting 
12-25 
1
Explanation  Correction 
3068  12392 
The actual time for executing the 
priority 24 task exceeds the set 
watchdog timeout time. 
1.  Reset the watchdog time to a larger 
value for the task. 
2.  Check whether there is any infinite loop 
in the program which the task calls.   
3.  Redownload it after modifying the 
3069  12393 
The actual time for executing the 
priority 25 task exceeds the set 
watchdog timeout time. 
Contact local technicians. 
306A  12394 
The actual time for executing the 
priority 26 task exceeds the set 
watchdog timeout time. 
Contact local technicians. 
306B  12395 
The actual time for executing the 
priority 27 task exceeds the set 
watchdog timeout time. 
Contact local technicians. 
306C  12396 
The actual time for executing the 
priority 28 task exceeds the set 
watchdog timeout time. 
Contact local technicians. 
306D  12397 
The actual time for executing the 
priority 29 task exceeds the set 
watchdog timeout time. 
Contact local technicians. 
306E  12398 
The actual time for executing the 
priority 30 task exceeds the set 
watchdog timeout time. 
Contact local technicians. 
306F  12399 
The actual time for executing the 
priority 31 task exceeds the set 
watchdog timeout time. 
Contact local technicians. 
4000  16384 
The reading and writing of the SD 
card data by the PLC failed. 
1. 
Check if the installation of the SD card is 
proper. 
2.  Check if the SD card is damaged. 
4003  16387 
The file in the SD card is read-
only. 
Modify the file in the SD card as the read-write 
file 
4100  16640 
The data in the project backup file 
is modified or the data format is 
incorrect.   
1. 
Ensure that the data in the project backup 
file is not modified. 
2. 
Ensure that the project backup file is 
generated by CANopen Builder.   
4101  16641 
The data format of the RETAIN 
variable backup file is incorrect. 
1. 
Ensure that the data in the RETAIN 
variable backup file is not modified. 
2. 
Ensure that the RETAIN variable backup 
file is generated by CANopen Builder. 
4102  16642 
During restoration, the data in the 
RETAIN variable backup file is 
partially different from that in the 
Ensure that the data in the RETAIN variable 
backup file is consistent with that in the PLC.   
4103  16643 
During restoration, the data in the 
RETAIN variable backup file is 
completely different from that in 
Ensure that the data in the RETAIN variable 
backup file is consistent with that in the PLC.   
4104  16644 
During restoration, the controller 
model in the project backup file is 
different from that of the actually 
Ensure that the controller model in the project 
backup file is the same as that of the actually 
connected PLC. 
4105  16645 
The program ID in the backup file 
is different from that of the current 
PLC. 
Ensure that the program ID in the backup file 
is the same as that of the current PLC.   
4106  16646 
The PLC password in the backup 
file is different from that of the 
Ensure that the PLC password in the backup