GE 996D996G1
Product Name: GE Mark V/VI I/O Communication Processor Module
Product Introduction: The GE 996D996G1 is an I/O communication processor module dedicated to GE Speedtronic Mark V and Mark VI control systems. It undertakes data transmission and communication management tasks between I/O racks and the central processor, serving as the core hub component of the entire control system’s data link.
Detailed content
Technical Specifications:
- Series: GE Speedtronic Mark V / Mark VI
- Working Voltage: +5 V DC
- Communication Protocol: GDH (GE Data Highway) / GRLO (GE Redundant Link Option)
- Data Transfer Rate: 10 Mbps (GDH)
- Slot Type: Mark V/VI standard I/O rack slot
- Operating Temperature: 0°C to +60°C
- Storage Temperature: -40°C to +85°C
- Relative Humidity: 5% to 95% (non-condensing)
Performance Parameters:
- Scan Cycle: ≤10 ms (typical)
- Supported I/O Points: Max 512 points (depending on system configuration)
- Communication Latency: ≤1 ms (GDH link)
Functional Features:
- High-speed data exchange between I/O modules and the main processor
- Supports GDH redundant communication links to ensure system communication reliability
- Built-in data buffering and error checking mechanism
- Supports hot-swappable operation without affecting system operation
Material Composition:
- Circuit Board: FR-4 epoxy glass fiber substrate
- Connectors: Gold-plated contacts, corrosion-resistant alloy housing
- Shell: Flame-retardant ABS engineering plastic (UL94 V-0 rated)
Structural Features:
- Standard card size, adapted to GE Mark V/VI I/O racks
- Front-facing status indicator LEDs (Power, Communication, Fault)
- High-density backplane connector on the rear
Working Principle: The module receives acquisition data from various I/O modules via the GDH bus. After internal processor data packaging and verification, it transmits to the central processor (CPU) via a high-speed communication link. Simultaneously, it distributes control instructions issued by the CPU to corresponding I/O channels, realizing bidirectional data communication.












