High-Quality Mitsubishi QJ71LP21-25 SI Fiber Optic Loop Module for Industrial Automation main product image

High-Quality Mitsubishi QJ71LP21-25 SI Fiber Optic Loop Module for Industrial Automation product photo

Q series PLC

High-Quality Mitsubishi QJ71LP21-25 SI Fiber Optic Loop Module for Industrial Automation

Mitsubishi Fiber Optic Loop (SI) Module QJ71LP21-25

New

Brand Mitsubishi

Model QJ71LP21-25

$46.00

Inquiry Now →

Mitsubishi Fiber Optic Loop (SI) Module QJ71LP21-25

Supports SI/QSI/H-PCF/Broadband H-PCF cables. Dual loop.

Controller network (control station/normal station) / Remote I/O network (remote master station).

MELSECNET/10 module for large-scale flexible network systems.

MELSECNET/10 systems include PLC inter-station networks (control station to normal station) and remote I/O networks (remote master station to remote I/O station).

Fiber optic loop system achieves high-speed communication at 10Mbps/25Mbps, with long station-to-station and total cable distances, and strong noise immunity.

Coaxial bus system uses low-cost coaxial cable, reducing network construction cost compared to fiber optic loop.

Twisted-pair bus system combines cost-effective network modules with twisted-pair cables for very low network system construction costs.

The Mitsubishi QJ71LP21-25 is a fiber optic loop (SI) module supporting SI/QSI/H-PCF/wideband H-PCF cables with dual-loop redundancy. It is used for MELSECNET/H networks, enabling PLC-to-PLC communication (control station/normal station) and remote I/O networks (remote master station). The fiber optic loop system achieves high-speed communication at 10 Mbps or 25 Mbps, with long station-to-station and total cable distances, and strong noise immunity. Alternative systems include a coaxial bus system (low-cost coaxial cable) and a twisted-pair bus system (cost-effective modules and cables), both offering lower network construction costs.