IC698BEM711 | GE Fanuc PACSystems RX7i | Bus Expansion Module

Product Description

The IC698BEM711 Bus Expansion Module is a rack-to-rack communication interface developed for the GE Fanuc PACSystems RX7i controller platform. It enables the CPU base rack to exchange high-speed backplane data with one or more remote expansion racks, allowing system architects to extend I/O capacity without compromising deterministic performance.

Designed for large and distributed control architectures, the IC698BEM711 maintains full backplane timing integrity across extended rack layouts. The module occupies a single RX7i slot and draws operating power directly from the system backplane, eliminating the need for external power connections. Its industrial design ensures stable operation in continuous-duty automation and SCADA environments.

Core Functionality

The IC698BEM711 acts as the physical and logical bridge between the RX7i CPU rack and downstream expansion racks. It transparently transfers backplane data, ensuring that remote I/O and communication modules behave as if installed locally in the main rack.

Key operational characteristics include deterministic data transfer, predictable scan timing, and full compatibility with RX7i CPUs and chassis configurations supported by PACSystems firmware.

Technical Specifications

• Model / Part Number: IC698BEM711

• Product Type: Bus Expansion Module

• Controller Platform: PACSystems RX7i

• Rack Interface: RX7i high-speed backplane bus

• Rack Connectivity: CPU rack to one or more expansion racks

• Expansion Medium: Copper or fiber expansion cables (system-dependent)

• Slot Requirement: One RX7i rack slot

• Power Supply: Backplane powered

• Nominal Operating Voltage: 5 V DC (from rack)

• Typical Power Consumption: Approximately 5 W

• Backplane Communication: Deterministic, high-speed parallel bus

• Module Form Factor: Standard RX7i single-width module

• Dimensions: 198 × 40 × 145 mm

• Weight: 0.6 kg

• Operating Temperature Range: 0 °C to 60 °C

• Storage Temperature Range: –40 °C to +85 °C

System Compatibility

The IC698BEM711 is engineered exclusively for the PACSystems RX7i family. It is not electrically or logically compatible with Series 90-70, RX3i, or other GE PLC platforms. Proper firmware alignment between CPU and expansion racks is required to ensure stable operation.

Typical Application Scenarios

• Large PACSystems RX7i control systems requiring extended I/O capacity

• Distributed rack layouts in process automation and power systems

• SCADA installations with centralized CPUs and remote I/O racks

• Reducing rack congestion while maintaining deterministic performance

Frequently Asked Questions

Q: Can the IC698BEM711 be used with RX3i controllers?
A: No. The IC698BEM711 is designed exclusively for PACSystems RX7i hardware and backplane architecture.

Q: Does the module require external power?
A: No. The module is powered directly through the RX7i backplane.

Q: How many expansion racks are supported?
A: The number of supported expansion racks depends on the CPU model, firmware version, and system configuration.