Tutto sui PLC: la CPU
A practical engineering guide to PLC CPU operation, from deterministic scan cycles and I/O image tables to memory, communications, diagnostics, redundancy, processor sizing, and reliable system...
Integrate host computer systems directly into industrial networks via a dedicated PCI slot. The Q80BD-J71LP21G interface board provides reliable connection capabilities for high-speed deterministic communications. Engineered specifically for MELSECNET/H network architectures, this module operates as either a control station or a normal station within an optical fiber loop network, facilitating seamless data exchange between PCs and PLCs.
Operating at a transmission rate of 10 Mbps, the interface board utilizes dual-loop optical fiber cabling to ensure physical path redundancy. If a cable break or station fault occurs, the network automatically initiates loopback operations to maintain communications. It features backward compatibility, supporting both MELSECNET/H extended modes and legacy MELSECNET/10 configurations to easily integrate into existing control topologies.
| Manufacturer | Mitsubishi Electric |
| Model Number | Q80BD-J71LP21G |
| Interface Slot Type | PCI Slot (Half-size) |
| Occupied Slots | 1 Slot |
| Communication Speed | 10 Mbps |
| Transmission Path Format | Double loop |
| Communication Method | Token ring |
| Synchronization Method | Frame synchronization |
| Coding Scheme | NRZI code (Non Return to Zero Inverted) |
| Transmission Format | HDLC compliant (frame format) |
| Error Control Method | CRC (X16 + X12 + X5 + 1) and retry |
| Compatible Communication Cable | GI-50/125 optical fiber cable |
| Applicable Connector | 2-core optical connector plug F06 / F08 equivalent (conforming to JIS C 5975/5977) |
| Max Stations per Network | 64 stations (1 management station, 63 normal stations) |
| Maximum Station-to-Station Distance | 2 km |
| Total Network Extension Distance | 30 km |
| Internal Current Consumption (5 VDC) | 0.45 A |
| Weight | 0.11 kg |
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Returns & Warranty

Integrate host computer systems directly into industrial networks via a dedicated PCI slot. The Q80BD-J71LP21G interface board provides reliable connection capabilities for high-speed deterministic communications. Engineered specifically for MELSECNET/H network architectures, this module operates as either a control station or a normal station within an optical fiber loop network, facilitating seamless data exchange between PCs and PLCs.
Operating at a transmission rate of 10 Mbps, the interface board utilizes dual-loop optical fiber cabling to ensure physical path redundancy. If a cable break or station fault occurs, the network automatically initiates loopback operations to maintain communications. It features backward compatibility, supporting both MELSECNET/H extended modes and legacy MELSECNET/10 configurations to easily integrate into existing control topologies.
| Manufacturer | Mitsubishi Electric |
| Model Number | Q80BD-J71LP21G |
| Interface Slot Type | PCI Slot (Half-size) |
| Occupied Slots | 1 Slot |
| Communication Speed | 10 Mbps |
| Transmission Path Format | Double loop |
| Communication Method | Token ring |
| Synchronization Method | Frame synchronization |
| Coding Scheme | NRZI code (Non Return to Zero Inverted) |
| Transmission Format | HDLC compliant (frame format) |
| Error Control Method | CRC (X16 + X12 + X5 + 1) and retry |
| Compatible Communication Cable | GI-50/125 optical fiber cable |
| Applicable Connector | 2-core optical connector plug F06 / F08 equivalent (conforming to JIS C 5975/5977) |
| Max Stations per Network | 64 stations (1 management station, 63 normal stations) |
| Maximum Station-to-Station Distance | 2 km |
| Total Network Extension Distance | 30 km |
| Internal Current Consumption (5 VDC) | 0.45 A |
| Weight | 0.11 kg |
Global Express Shipping
Returns & Warranty
Orders are processed and delivered Monday-Friday (excluding public holidays).
For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .
| Country of origin |
United States
|