For further installation and PROTECT switch details, refer to the FX3U
Series User's Manual - Hardware Edition of the respective PLC.
• Power off the PLC before attaching/detaching the memory cassette.
• The PLC ERROR (ERR) LED may flicker to indicate a program error
when using the product for the first time.
In such a case, perform an "All Clear" or "Program transfer" by a
programming tool.
• Connect the memory cassette securely to the prescribed connector. A