Factory Automation

Controllers MELSEC iQ-R Series Product features -Network-

    MELSECNET/H network module (Optical loop type)

    This module supports the PLC to PLC network in a MELSECNET/H network *1.

    • *1.Remote I/O network is not supported.

    Easily utilize MELSEC-Q Series programs

    • Easy addition
    • Easy replacement
    • MELSEC iQ-R Series modules can be added to the existing MELSECNET/H network consisting with MELSEC-Q Series modules
    • A redundant system is also supported, allowing replacement of the existing MELSEC-Q Series redundant system

    The module in the red box is the MELSECNET/H network module (RJ71LP21-25).

    MELSECNET/H network module (Coaxial bus type)

    Coaxial bus cables are less expensive than optical fiber cables, allowing system configuration at a low cost.

    Easily utilize MELSEC-Q Series programs

    • Easily added
    • Easily replaced
    • The MELSEC iQ-R Series modules can be added to the existing MELSECNET/H network consisting of the MELSEC-Q Series modules. Replacement is also possible

    Specifications <sup>MELSECNET/H network module specifications </sup>

    Item RJ71LP21-25 RJ71BR11
    Compatible network MELSECNET/H MELSECNET/H
    Communication speed (bps) 25M/10M (MELSECNET/10 mode: 10M) 10M
    Maximum stations per network 64 32
    Network topology Duplex loop Single bus
    Connection cable Optical fiber cable Coaxial cable
    Max. station-to-station distance (m) 10 Mbps:
    500 (SI optical fiber cable)
    1000 (H-PCF/broadband H-PCF/QSI
    /broadband silica glass optical fiber cable)
    3C-2V: 300
    5C-2V: 500
    5C-FB, S-5C-FB: 500
    Overall cable distance (m) 30000 3C-2V: 300
    5C-2V: 500
    5C-FB, S-5C-FB: 500
    Can be extended up to 2.5 km with a
    repeater unit (A6BR10, A6BR10-DC)
    Maximum link points per network
    Link relay (LB) 16384 points (MELSECNET/10 mode: 8192 points) 16384 points (MELSECNET/10 mode: 8192 points)
    Link register (LW) 16384 points (MELSECNET/10 mode: 8192 points) 16384 points (MELSECNET/10 mode: 8192 points)
    Link input (LX), link output (LY) 8192 points 8192 points