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Mitsubishi Electric QJ71BR11 — PLC Communication Modules

Mitsubishi QJ71BR11 MELSECNET/10 Coaxial Bus Module, 10 Mbps

MPNQJ71BR11

Mitsubishi Q Series, QJ71BR11 data link unit, coaxial bus system, 10 Mbps, token bus protocol, Manchester code, mature lifecycle.

$60.00Ref. price · indicative, final on quote
Mitsubishi Electric QJ71BR11 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

QJ71BR11 — Communication
ParameterValue
Communication Speed10 Mbps
Communication methodToken bus
QJ71BR11 — Specifications
ParameterValue
Transmission path formatSingle bus
Maximum number of networks239 (total including remote I/O networks)
Applicable connectorConnector plug for 3C-2V, Connector plug for 5C-2V, Connector plug for 5C-FB (obtained by user)

Product details

Network configuration limits

The QJ71BR11: A single network supports up to 32 stations (one control station and up to 31 normal stations). The total system spans up to 239 networks, including remote I/O networks. In MELSECNET/10 mode, the maximum number of groups per network is 9; in MELSECNET/H mode, it's 32.

Cabling and connectors

The QJ71BR11 uses a coaxial cable obtained by the user — typically 3C-2V, 5C-2V, or 5C-FB. The user provides the connector plug for the chosen cable. The transmission path is a single bus topology.

Frequently asked questions

What are the key communication specs of this module?

It uses a coaxial bus with token bus protocol, Manchester encoding, HDLC frames, and a communication speed of 10 Mbps. Synchronous method is frame synchronous.

How many I/O points does the QJ71BR11 occupy on the PLC rack?

It occupies 32 I/O points, assigned as intelligent module 32 points.

MPN
QJ71BR11