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Mitsubishi Electric QJ71LP21GE — PLC Communication Modules

Mitsubishi QJ71LP21GE MELSEC-Q Network Module

MPNQJ71LP21GE

Mitsubishi MELSEC-Q Series, PLC Expansion Module, QJ71LP21GE, Network Interface Module, 0.05 kg, Mature Lifecycle.

$4,295.01Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

QJ71LP21GE — Specifications
ParameterValue
Weight0.05 kgs

Product details

The Mitsubishi QJ71LP21GE is a network interface module for the MELSEC-Q PLC series, handling data communication over the system bus or optical loop within the Q rack.

Lifecycle stage is marked as mature, meaning the module is in stable production with ongoing support but not a newly introduced part. It is available to quote against an RFQ through our distribution channel.

Peer Comparison: LJ71E71-100

The LJ71E71-100 is an Ethernet module for the MELSEC-L series, not the MELSEC-Q. The QJ71LP21GE attaches to a Q backplane; the LJ71E71-100 uses an L-series base. They are not electrically or mechanically interchangeable without changing the CPU base unit.

Frequently asked questions

Will the QJ71LP21GE drop into a panel specified around the LJ71E71-100 without rewiring?

No. The QJ71LP21GE is for the MELSEC-Q series, while the LJ71E71-100 is for the MELSEC-L series. They are not electrically or mechanically compatible. A panel wired for an L-series module would require a Q-series base and potentially different wiring.

MPN
QJ71LP21GE