GE PMC676RCLC Ethernet PMC Interface Module

GE PMC676RCLC Ethernet PMC Interface Module

GE PMC676RCLC Ethernet PMC Interface Module

Brand： GE

Product ID： PMC676RCLC

Condition： New / used

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Description

GE PMC676RCLC

I. Basic Information


Model: PMC676RCLC
Brand: GE
Product Line: Single-slot PMC form factor dual LC fiber Gigabit Ethernet network adapter, adopting Intel 82546 dual-port MAC controller, supporting 1000BaseSX multimode fiber transmission. Equipped with independent DMA engine and 64KB FIFO buffer, it provides hardware TCP checksum offload, intelligent packet filtering and redundant network capability, widely used in GE Mark VIe turbine control systems, military rugged embedded platforms, rail transit and industrial high-speed data acquisition systems for reliable long-distance fiber communication expansion.


Product Positioning

PMC676RCLC is a rugged industrial fiber Gigabit NIC designed for CPCI/VME embedded control platforms. The RCLC variant features RoHS compliance, dual LC optical interfaces and short-wave multimode fiber transmission. It effectively eliminates electromagnetic interference in harsh industrial environments, supports point-to-point dedicated high-speed data links and dual-link hot standby redundancy, with optional conformal three-proof coating to adapt to wide-temperature harsh working conditions. It serves as a mainstream spare part for network upgrade and faulty communication card replacement of legacy industrial embedded control systems.


Hardware Architecture

Flame-retardant FR4 PCB with optional acrylic/polyurethane conformal coating, consisting of four core functional units: dual-port Gigabit MAC main control unit, LC fiber photoelectric conversion unit, PCI/PCI-X backplane bus interaction unit, network management and hardware configuration unit. Each channel is equipped with independent DMA and deep FIFO cache to reduce host CPU overhead, with front-panel LED indicators for real-time link status monitoring.


Mounting Specification

Standard single-slot PMC mezzanine card, compatible with CPCI/VME/VPX embedded chassis PMC expansion slots, compliant with MIL-STD-810 vibration and wide-temperature reliability standards for direct spare replacement without backplane and driver modification.
Dimension: 149mm×74mm, net weight: 0.32kg.


Compatible Systems

  1. Hardware: CPCI/VME CPU main board, LC multimode fiber patch cord, industrial fiber switch, rugged control chassis;
  2. Drivers: Official drivers for VxWorks, Linux, LynxOS, Windows, Solaris, network configuration debugging tool;
  3. Upper Systems: Power plant DCS, fault waveform recording server, remote operation and maintenance platform, ATE automatic test equipment;
  4. Application Industries: Thermal power turbine control, military airborne/vehicle-mounted measurement and control, rail transit traction system, oil & gas pipeline monitoring and industrial high-speed data collection.


Product Characteristics

  1. Dual independent 1000BaseSX LC fiber ports with maximum 550m transmission distance, completely immune to industrial electromagnetic interference to ensure error-free and lossless control data transmission.
  2. Per-channel independent DMA + 64KB FIFO cache and hardware TCP checksum offload greatly reduce host bus and CPU load, supporting jumbo frame high-bandwidth data transmission.
  3. Multi-layer intelligent packet filtering suppresses network broadcast storm, guarantees real-time and deterministic communication of industrial control systems.
  4. Flexible dual-link redundancy and point-to-point dedicated network deployment realize seamless fault switching to avoid system downtime caused by single-link failure.
  5. Wide-temperature rugged design with optional conformal coating, high MTBF of 245000 hours, supporting long-term unattended stable operation.
  6. Full compatibility with mainstream embedded operating systems and PXE remote network boot facilitates centralized equipment deployment and firmware batch upgrade.


II. Technical Specifications


2.1 Electrical Parameters

  • Power Supply: 3.3V/5V via PMC backplane, typical power consumption 6W; 3.3V: 0.9A, 5V: 0.6A
  • Bus Standard: PCI 2.2 / PCI-X, 32/64bit, 33/66MHz, 3.3V/5V signal level compatible
  • Dielectric Withstand Voltage: 1500VAC 1min for all ports, ±4kV ESD, ±2kV EFT surge protection.


2.2 Fiber Ethernet Parameters

  • Interface: Dual LC duplex optical ports, 1000BaseSX multimode Gigabit
  • Wavelength: 850nm, max transmission distance 550m
  • Duplex Mode: Full/half duplex adaptive, jumbo frame up to 9KB supported
  • Offload Function: TCP/UDP/IP hardware checksum offload, SNMP/RMON traffic statistics, multi-mode address filtering.


2.3 Software & Driver Parameters

  • Supported OS: VxWorks, Linux, LynxOS, Windows, Solaris
  • Network Protocol: TCP/IP, UDP, ARP, ICMP, PXE remote boot supported
  • Status Indicator: Front-panel dual LEDs for link and data activity.


2.4 Environmental Specifications

  • Operating Temperature: 0℃ ~ +60℃ (wide temp version: -40℃ ~ +70℃)
  • Storage Temperature: -40℃ ~ +85℃
  • Relative Humidity: 5%～95%RH, non-condensing, no corrosive gas
  • Vibration Compliance: IEC 60068-2-6, MTBF=245000h @25℃, RoHS & CE certified
  • Optional Conformal Coating: Acrylic / polyurethane three-proof coating.


2.5 Mechanical Parameters

  • Form Factor: Single-slot standard PMC mezzanine card
  • Dimension: 149mm × 74mm, net weight: 0.32kg
  • PCB: FR4 V0 flame-retardant material
  • Interfaces: Front dual LC fiber ports + status LEDs, rear 100-pin PMC backplane connector.


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III. Key Features


3.1 Dual Fiber Link High-Speed Anti-Interference Data Transmission

Multimode fiber realizes long-distance Gigabit communication isolated from industrial electromagnetic interference; independent hardware cache ensures stable transmission of real-time control and fault recording data, solving the limitations of traditional copper cable network in harsh industrial scenarios.


3.2 Hardware Network Offload & Intelligent Traffic Filtering

Hardware checksum calculation offloads CPU pressure; multi-layer packet filtering suppresses invalid broadcast storms, improving the real-time and determinism of industrial control network to avoid system communication stall and interruption.


3.3 Dual Link Redundancy & Point-to-Point Dedicated Networking

Supports switch-based link hot standby and direct fiber point-to-point dedicated channel deployment, realizing bumpless failover when single fiber link fails to guarantee uninterrupted safe operation of the control system.


3.4 Remote Network Deployment & Full-Lifecycle Network O&M

PXE remote boot enables batch system image deployment and firmware upgrade; SNMP network statistics realize remote real-time monitoring of link traffic, bit error rate and fault status for rapid on-site troubleshooting.


3.5 Rugged Wide-Temperature Three-Proof Industrial Adaptability

Optional conformal coating resists moisture, dust and corrosive gas erosion, adapting to sealed high-temperature control cabinets, vehicle-mounted and other extreme working environments, maximizing equipment continuous operation reliability.


IV. Working Principle


After power-on self-test of hardware, optical module and bus interface, the module loads factory preset MAC address and driver configuration to enter network standby mode. Optical signals are converted to electrical signals for hardware filtering and checksum processing, then transmitted to the host CPU via DMA and PCI bus. Bidirectional data transmission is realized through full-duplex fiber links, with real-time link status displayed via front-panel LEDs. When redundant networking is configured, the system automatically switches to the backup fiber channel upon primary link failure, and supports remote system deployment via PXE fiber network boot.


V. Application Scenarios


  1. Thermal & combined cycle power plants: GE Mark VIe turbine controller redundant fiber communication, remote I/O rack high-speed data interaction, SOE and fault waveform data upload.
  2. Military vehicle/airborne rugged measurement and control systems: Distributed sensor high-speed data transmission and remote equipment firmware upgrade.
  3. Rail transit traction & signal control system: On-board main unit redundant network expansion and field equipment status centralized backhaul.
  4. Oil & gas, metallurgical automation projects: Distributed control system fiber redundant communication and ATE test equipment high-speed data acquisition.
  5. Legacy CPCI/VME embedded industrial control system renovation: Upgrade from 100M copper network to Gigabit fiber high-reliability communication architecture with original slot and driver compatibility.

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