GE Fanuc PACSystems RX7i IC698BEM711 Bus Expansion Interface Module

Performance Overview

The IC698BEM711 (Part Number: IC698BEM711) is a specialized communication bridge designed for the PACSystems RX7i architecture. This module facilitates the transparent extension of the high-speed VME64-based backplane, allowing a primary CPU rack to interface directly with remote expansion chassis. By utilizing the IC698BEM711, engineers can scale their I/O count significantly while maintaining the deterministic performance and sub-millisecond bus speeds required for complex, distributed control applications.

Technical Specifications

The following data defines the electrical and physical parameters for the IC698BEM711 integration:

• Platform Compatibility: PACSystems RX7i

• Function: Local and Remote Bus Expansion

• Data Transfer: Deterministic parallel bus synchronization

• Power Requirement: 5 VDC (sourced via backplane)

• Energy Consumption: 5 Watts (Typical)

• Slot Width: Standard single-width RX7i slot

• Physical Profile: 198 mm x 40 mm x 145 mm

• Thermal Operating Range: 0°C to 60°C (32°F to 140°F)

• Mass: 0.6 kg (approx. 1.32 lbs)

System Architecture and Connectivity

The IC698BEM711 functions as an endpoint for specialized expansion cabling, which connects the main controller rack to additional expansion baseplates. This configuration allows the RX7i CPU to treat I/O modules in the secondary racks as if they were residing on the local backplane. The module supports both copper and fiber optic media interfaces depending on the specific cable assembly used, ensuring reliable data integrity across varying distances and in environments with high electromagnetic interference (EMI).

Integration and Maintenance

Designed for high-availability industrial environments, the module features front-panel status indicators to monitor bus health and link activity. Installation is simplified through the RX7i's rugged mechanical design, ensuring secure seating within the VME chassis. For optimal performance, it is recommended to verify that the power supply of the expansion rack is properly sized to handle the additional 5W load introduced by this bus interface module.