MELSEC-L Series Informational Module LJ71C24 SPS, L-Serie Serial Interface Module; 1 x RS232; 1 x RS422/485 PRODUCT L6ADP-R2 PLC, L-Series Serial Module; RS232; 115,2 kbps PRODUCT L6ADP-R4 PLC, L-Series Serial Module; RS422/485; 115,2 kbps PRODUCT LJ71C24-R2 SPS, L-Serie Serial Interface Module; 2 x RS232 PRODUCT