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PQMII-T20-C – Protocol Queue Manager Interface Module Enhanced Revision

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Product Introduction:
The GE PQMII-T20-C is the “C” revision of the PQMII-T20 Protocol Queue Manager board. The “-C” suffix indicates a component-level enhancement over the base T20 revision. These enhancements typically include updated network processors for higher throughput, improved firmware for better protocol support, and enhanced cybersecurity features. The core functionality remains identical to the T20, but the C revision offers superior long-term reliability and performance in demanding industrial environments.

Technical Specifications:
Board Type: Protocol Queue Manager Interface (PQMII)
Revision: T20-C (Enhanced)
Ethernet Ports: 4 Gigabit Ethernet + 2 10-Gigabit SFP+ ports (upgraded from T20)
Protocol Support: All T20 protocols plus MQTT, AMQP (for IIoT applications)
Queue Depth: 2048 message queues (doubled from T20)
Throughput: Up to 10 Gbps aggregate (upgraded from 1 Gbps)
Latency: Less than 1 millisecond for priority traffic (improved from 5ms)
Redundancy: PRP and HSR support (added in C revision)
Memory: 512 MB DDR3 RAM (upgraded from 256 MB in T20)

Functional Features:
10-Gigabit Uplinks: The SFP+ ports provide high-bandwidth connections to core plant switches, supporting video and big data applications.
IIoT Protocol Support: Added MQTT and AMQP support enables direct cloud connectivity for Industrial Internet of Things applications.
Enhanced Cybersecurity: Supports 802.1X authentication, MACsec encryption, and TLS 1.3 for secure communications.
Larger Buffers: Doubled queue depth allows the board to handle longer network outages without losing messages.
Advanced Diagnostics: Provides real-time network traffic analysis, packet capture, and protocol-level diagnostics.

Application Scenarios:
Smart Plant Integration: Connects the turbine controller directly to cloud platforms and IIoT gateways using MQTT.
High-Bandwidth Applications: Used in plants that require 10-Gigabit connectivity for video surveillance, real-time analytics, and large historian data transfers.
Cybersecurity-Critical Installations: Deployed in facilities with strict cybersecurity requirements (NERC CIP, IEC 62443) due to enhanced encryption and authentication.
Retrofit Projects: Replaces older T20 boards in existing Mark VIe systems to add 10-Gigabit capability and IIoT protocol support.




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