MelsecQnA via TCP/IP

The MELSECQ Driver supports TCP/IP communication to the MelsecQna PLC, manufactured by Mitsubishi Electric, over Ethernet. Using this method you can connect to single MelsecQna PLCs or to multiple MelsecQna PLCs, using 10BASE5 or 10BASE2 Ethernet cabling.

Communication to the MelsecQnA PLC is specifically through the Melsec Qna interface module type AJ71QE71, but AJ71QE71-B5, A1SJ71QE71-B2 and A1SJ71QE71-B5 Ethernet interface modules are also supported. See the section on MelsecQnA - Hardware Setup for more information on these modules.

The primary MelsecQna PLC is also able to communicate with other PLC CPUs via a MELSECNET network (MELSECNET/10, MELSECNET/II or MESLECNET/B) connected to the primary PLC.