OVERVIEW

Official designation: Mitsubishi QJ72LP25-25 (MELSEC-Q Series, MELSECNET/H Network Module)

Role/Application: An optical loop remote I/O station unit for the MELSECNET/H network, supporting a 25 Mbps data link speed for reliable, real-time data exchange in distributed control systems.

KEY SPECS SUMMARY

Power: 5 V DC, 0.6 A internal current

Interfaces / Ports: 2-core SI/QSI optical cable

Indicators: Refer to the latest manufacturer manual.

Operating Temp: 0 to 55 degrees C

Platform / Compatibility: MELSEC-Q Universal Base Unit

Limit: 65 total stations, 8192 remote I/O points

Lifecycle: To be discontinued, last time buy March 2028

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What is the maximum distance between stations using the SI/QSI fiber cable?

A: Maximum station-to-station distance is 1 kilometer with SI/QSI 200/250 micrometer optical cable.

Wiring & Installation:

Q: What is the recommended optical cable for the QJ72LP25-25 module?

A: Recommended cables are SI/QSI or H-PCF/broadband H-PCF optical cables.

Troubleshooting & Compatibility:

Q: What are the physical dimensions and weight of the QJ72LP25-25 module?

A: Dimensions are 27.4 mm wide, 98 mm high, 90 mm deep, weighing 0.15 kg.

Replacement & Upgrades:

Q: Is there a direct upgrade path for the QJ72LP25-25 module after its discontinuation?

A: No direct replacement is specified; consider the CC-Link IE Field series for new systems.