Three memory cassettes that can be installed into the FX3U CPU, and when installed the memory cassette's internal program is used in place of the internal RAM memory. The FX3U-FLROM-64L (stock no. 539-0853) features program transfer buttons to allow permanent overwriting of the RAM based-program. FX3U battery – this battery buffers the internal RAM memory of the FX3U in the event of a power supply failure. FX3U-USB-AW converts USB interface to RS422 to allowing direct programming of FX3U PLCs using a PC's USB port with either GX Developer or GX IEC Developer programming software.
Flash ROM modules in 16kB and 64kB sizes with a program loader version of the 64k to allow program transfer to/from PLC's.
Programming cables and batteries also available.
