With , you erase the current program in the PLC and return the PLC’s system registers to their original, factory default settings. With certain PLC types you can select two more options:
Clear F-ROM data blocks
F-ROM expansion data area will be cleared.
Clear comment memory
Also projects stored in the comment memory of the PLC will be cleared.
It is not necessary to erase an old program before writing a new program in the PLC.
The factory settings of the PLC differ from the standard settings of the system registers in Control FPWIN Pro7.
The PLC’s program and system register settings are overwritten by those of the Control FPWIN Pro7 program.