Mitsubishi Electric · MELSEC-Q/L Common Instruction
This error occurs when the boot setting has not been configured in the PLC parameter, preventing the execution of a program replaced by the PSWAPP instruction. The system expects a program to be designated for boot. This ultimately prevents the newly swapped program from running, indicating a missing or incorrect system configuration for program execution.
Click steps to track your progress.
Access the PLC parameters via the programming software.
Configure the boot setting in the PLC parameter to the program name intended for execution.
If the program setting in the PLC parameter is also incorrect, update it for the corresponding program name.
If the program was recently modified or transferred, write the correct program to the CPU module again after adjusting boot and program settings.