First TwinCAT PLC Project on a Beckhoff IPC
Build and verify a first TwinCAT PLC project on a Beckhoff IPC. This checklist covers target selection, EtherCAT discovery, I/O mapping, safe activation, restart tests, and commissioning records.
Manufacturer: Mitsubishi Electric
Product No.: Q81BD-J71GP21-SX
Country of origin:United States
Product Type: CC-Link IE Control Network PC Interface Boards
Payment: T/T, Western Union
Weight: 1500g
Shipping port: Xiamen
Warranty: 12 months
Integrating industrial PC-based systems directly into high-speed automation networks, the Mitsubishi Electric Q81BD-J71GP21-SX serves as a high-performance CC-Link IE Control Network interface board. It allows an industrial computer or controller to function seamlessly as either a control station or a normal station within an optical dual-loop topology. Configured for Modern PCIe architectures, this module ensures high-throughput, real-time deterministic communication for demanding distributed industrial applications.
| Specification Parameter | Value / Detail |
|---|---|
| Manufacturer | Mitsubishi Electric |
| Model Number | Q81BD-J71GP21-SX |
| Product Type | CC-Link IE Control Network PC Interface Board |
| Station Type | Control station or normal station |
| Max Boards per PC | Up to 4 boards |
| Installation Slot | PCI Express x1, x2, x4, x8, x16 (half size) |
| PCI Express Spec | Standard Rev. 1.1 (3.3 VDC, link width: 1 lane, basic clock: 100 MHz) |
| Occupied Slots | 1 slot |
| Internal Current Consumption | 2.07 A at 3.3 VDC |
| Network Connection Type | Optical dual-loop connector (LC type duplex) |
| Weight | 0.13 kg (0.28 lbs) |
| Shipping Weight (Calculated) | 1.50 kg (3.30 lbs) |
| Interface / Connection Port | Functional Assignment / Description |
|---|---|
| IN (Optical Port) | Receiving port for the CC-Link IE Control redundant optical fiber loop. |
| OUT (Optical Port) | Transmitting port for the CC-Link IE Control redundant optical fiber loop. |
| PCIe Edge Connector | PCI Express Standard Rev 1.1 compliant 1-lane bus interface for host communication and 3.3 VDC power supply. |
Based on industrial deployment data, maintaining clean fiber-optic interfaces is critical for long-term transmission stability.
When migrating legacy industrial computer systems from PCI-bus models (such as the Q80BD-J71GP21-SX) to this PCIe-based alternative, you must update the CC-Link IE Control utility software on the host. While the physical interface shifts from a standard PCI edge connector to a PCI Express x1 connection, the application layer configuration within the SW1DND-CCIEF-B software remains backward compatible.
This module pulls a high peak current of 2.07 A at 3.3 VDC directly from the motherboard's PCIe slot. When configuring systems that utilize the maximum of 4 boards in a single host PC, ensure the industrial PC motherboard and power supply are specifically rated to support up to 8.28 A on the 3.3 VDC rail. General-purpose office motherboards frequently suffer from voltage instability when loaded with multiple high-current PCIe expansion boards, causing intermittent network timeouts.
Ensure only high-quality graded-index (GI) multi-mode fiber-optic cables (50/125 micrometer) with LC connectors are utilized. Always connect the OUT port of one station to the IN port of the adjacent station in a continuous loop. Dust caps must remain secured on any unused transceivers to prevent environmental debris from degrading the optical transmitter assembly; clean all fiber tips with a dedicated dry optic cleaner prior to final insertion.
Global Express Shipping
Returns & Warranty

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
|