Modicon M340 CPU Memory Cards All Modicon M340 processors are supplied with an 8Mb SD (Secure Digital) type Flash memory card. This memory card is intended for backing up the program, symbols and comments and the constants. Duplication and retrieval (on return of power) operations are managed automatically by the system and are therefore transparent to the user.,This card (formatted by Schneider Electric and supplied with each processor) is referenced as a replacement part BMXRMS008MP (147-657).,For BMXP342010/2020/2030 processors the BMXRMS008MPF (147-950) also offers 16Mb and BMXRMS128MPF (681-8719) offer 128Mb additional file storage and standard web services (Transparent Ready class B10) if a TCP/IP port is available