Chapter 12 Troubleshooting 
12-21 
1
Explanation  Correction 
1603  5635 
Full buffer area for USB 
communication 
Contact local technicians if the problem still 
exists after re-downloading the program. 
3000  12288 
The number of inputs or the 
number of outputs is greater than 
the limit 32.   
Reset the number of input and output 
variables in the self-defined POU and make 
sure the number of input or output variables 
3001  12289 
The capacity for one POU is more 
than 65535 bytes.   
Change the capacity of variables in a POU to 
reduce the variable occupation in the memory. 
3002  12290 
The number of POUs is more 
than 1000. 
Reduce the number of POUs called by the 
task and re-download the program. 
3003  12291  The POU type is illegal. 
Update the software 
if the error still exists after 
re-compiling and re-downloading the program 
and repowering the product. 
3004  12292 
The types of parameters in the 
program are illegal.   
3005  12293 
Variable’s offset address error in 
the program   
3006  12294 
The data types of parameters are 
illegal in the program.   
3007  12295 
The jump range in a program is 
illegal. 
3008  12296 
Program memory allocation 
alignment is incorrect. 
3009  12297 
Virtual axis encoder memory 
alignment is incorrect. 
300A  12298 
The Bit accessed exceeds the 
range. (Only Bit0~Bit7 can be 
accessed.)   
Update the software if the error still exists after 
re-compiling and re-downloading the program 
and repowering the product. 
300B  12299 
It is detected that data types are 
illegal in the program.   
Update the software if the error still exists after 
re-compiling and re-downloading the program 
and repowering the product. 
300C  12300 
The length of data type String is 
too large. 
The number of characters in String data type 
is too large. Update the software if the error 
still exists after modifying the program, re-
compiling and re-downloading the program. 
300D  12301 
Illegal addressing method for 
variables 
Update the software if the error still exists after 
re-compiling and re-downloading the program 
and repowering the product. 
300E  12302 
Improper priority setting of the 
task   
Set a proper task priority and cycle time for 
the task 
300F  12303 
Exception occurs during 
accessing the controller's memory 
Check whether any index is out of bounds of 
the array in the program. The pointer is used 
by not assigning it a value or is used by   
assigning it    an incorrect value. Contact local 
technicians if the problem still exists after re-
3020  12320 
The checksum of the downloaded 
Motion configuration is illegal. 
Update the software 
if the error still exists after 
re-compiling and re-downloading the program 
and repowering the product. 
 
3021  12321 
The checksum of the downloaded 
extension configuration is illegal.   
3022  12322 
The checksum of the downloaded 
program is illegal.   
3023  12323 
The checksum of the downloaded 
task data is illegal. 
3024  12324 
The checksum of the downloaded 
CANopen data is illegal.   
3025  12325 
The checksum of the downloaded 
hardware configuration is illegal.