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 and Sourcing
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.