GE IC694BEM331 – RX3i Genius Bus Controller Module

Technical Specifications

• Manufacturer: GE Fanuc (Emerson)
• Series: PACSystems RX3i
• Module Type: Single-slot Genius Bus Controller
• Communication Protocol: Genius I/O Serial Bus
• Data Transfer Rate (Software Configurable):
  • 153.5 Kbaud (Standard: 2000 ft; Extended: 3500 ft)
  • 76.8 Kbaud (Max Length: 4500 ft)
  • 38.4 Kbaud (Max Length: 7800 ft)
• Max Devices per Bus:
  • 32 devices (at 153.5/76.8 Kbaud)
  • 16 devices (at 38.4 Kbaud)
• Data Exchange Capacity: Up to 128 bytes of data exchange with each Genius device per scan
• Power Requirements: 5V DC, 300 mA
• Isolation Rating: 2000V high-voltage isolation, 1500V transient common-mode rejection
• Bus Termination: Requires 75Ω, 100Ω, 120Ω, or 150Ω resistors at both ends
• LED Indicators:
  • OK: Solid green when operational
  • COM: Solid green for normal communication; flashes on errors
• Compatibility:
  • RX3i CPU firmware v2.9 or higher
  • Proficy Machine Edition v5.00 SP1A or later
  • GE 90-30/6 series PLCs

Key Features

1. Seamless Genius Bus Integration: Connects RX3i to Genius I/O networks, supporting daisy-chain or twisted-pair cabling.
2. High-Speed & Flexible Communication: Multiple baud rates adapt to distance and device count.
3. Robust Data Handling: Exchanges 128-byte global data per bus scan for real-time control.
4. System Scalability: Up to 8 modules per RX3i system for complex automation.
5. Comprehensive Diagnostics:
   • Automatic fault/alarm reporting from Genius devices.
   • LED status for quick troubleshooting.
   • CPU-readable diagnostic logs.
6. Electrical Ruggedness: 2000V isolation protects against industrial noise and surges.

Application Scenarios

• Distributed I/O Control: Connects remote Genius I/O stations (VersaMax, Field Control) to RX3i in large-scale plants.
• Legacy System Integration: Bridges modern RX3i with existing GE 90-30/6 series PLCs and Genius networks.
• Process Automation: Used in manufacturing, water treatment, and power for real-time data acquisition and control.
• Factory Floor Networking: Enables communication between PLCs, HMIs, and Genius handheld monitors (HHM).

Additional Information

• Status: Discontinued by the manufacturer but widely supported in legacy systems.
• Form Factor: Compact single-slot design for easy installation in RX3i racks.