TRICONEX AT-2701FX 843-000844-00 Rev D – 100BASE‑FX Fiber NIC for Industrial/Triconex Workstations

The TRICONEX AT-2701FX (P/N 843-000844-00, Rev D) is a 100BASE‑FX fiber network interface card typically used in Triconex engineering workstations and HMI/servers where EMI immunity and long fiber runs matter. It’s essentially the industrial, revision-controlled variant of the well-known Allied Telesis AT‑2701FX platform, selected because it’s predictable, easy to support, and plays nicely with legacy control networks that still run 100 Mbps fiber.

Company’s Order Placement Process and Guarantees

• Warranty: 365 days
• Lead time: 1 week if in stock; no more than 1 month latest
• Payment: 50% advance; full payment before delivery
• Express logistics: FedEx, UPS, DHL

Key Features

• 100BASE‑FX over fiber: Stable 100 Mbps fiber link, ideal for control rooms and long-distance drops in noisy plants.
• SC duplex interface: Straightforward SC connector that maintenance teams know, with link/activity LEDs for quick checks.
• Full‑duplex support: Up to 200 Mbps aggregate in full‑duplex; helps keep engineering traffic responsive.
• PCI 32‑bit, 5 V signaling: Fits standard workstation/IPC PCI slots common in many DCS/SIS environments.
• EMI immunity: Fiber link reduces susceptibility to electrical noise compared with copper—useful near drives or high-current switchgear.
• Revision-controlled build: 843-000844-00 Rev D is favored for drop‑in replacement consistency across installed bases.
• Standards compliance: IEEE 802.3u 100BASE‑FX, flow control (802.3x); VLAN tagging support is typically available on this series.
• Driver availability: In many cases, drivers are available for mainstream Windows and Linux distributions used in control PCs.

Technical Specifications

Application Fields

From my experience, this card is deployed in engineering workstations and operator stations within Triconex-based SIS networks where fiber is preferred. You might notice that it’s also a good fit for any brownfield DCS/SCADA environment still running 100BASE‑FX to fiber switches.

• Safety instrumented systems (Triconex ES/HMI/Engineering workstations)
• Power generation control rooms using legacy fiber distribution
• Oil & gas plants and refineries with high EMI zones
• Chemical and pharmaceutical facilities needing galvanic isolation via fiber
• Metals, mining, and heavy manufacturing with long cable runs
• Marine/offshore platforms where copper runs are impractical

Advantages & Value

• Reliability: Fiber link reduces noise-related dropouts; field-proven AT‑2701FX design.
• Compatibility: 5 V PCI and 100BASE‑FX make it a straightforward drop‑in for many legacy control PCs and fiber switches.
• Lifecycle consistency: Specified as 843-000844-00 Rev D, making spares planning and fleet standardization easier.
• Cost control: Keeps existing fiber infrastructure viable—no immediate need to re‑engineer to copper or gigabit.
• Support: Driver packages for mainstream OS versions are typically available; we can share guidance for validated combinations.

Installation & Maintenance

• Environment: Install in a clean, ventilated control cabinet or workstation chassis; avoid blocked airflow around the PCI area.
• Slot compatibility: Use a 32‑bit PCI slot with 5 V signaling; secure the bracket to prevent vibration‑related issues.
• Fiber practice: SC multimode patch cords (50/125 or 62.5/125 µm) are commonly used; maintain bend radius and clean connectors before mating.
• Networking: Set the switch port to 100 Mbps full‑duplex when possible; verify 100BASE‑FX optics match (wavelength and mode).
• Safety: Observe ESD handling; power down and lockout/tagout the workstation before installation.
• Maintenance: Periodic connector cleaning and link LED checks; driver updates can be applied during scheduled maintenance windows.

One thing I appreciate is how predictable link behavior is once duplex and fiber mode are aligned—most issues we see come down to dirty connectors or mixed fiber types.

Quality & Certifications

• Compliance: CE, FCC, RoHS (typical for the AT‑2701FX series; exact markings may vary by lot/revision)
• Manufacturer policy: 12‑month warranty coverage as supplied

Common Supporting Components (Optional)

• SC‑SC multimode fiber patch cords (50/125 or 62.5/125 µm; lengths to suit rack layout)
• Industrial fiber switches with 100BASE‑FX ports for control networks
• Fiber cleaning kits and dust caps for preventative maintenance
• Full‑height or low‑profile brackets (depending on the workstation chassis)