The General Electric IC697BEM711 is a high-speed parallel Bus Expansion Module (BEM) designed for the Series 90-70 Programmable Logic Controller (PLC) system. This module facilitates the expansion of the PLC system by allowing the connection of up to seven additional expansion racks from the main CPU rack, enabling complex distributed automation across large-scale industrial environments.

Features

• High-speed parallel bus expansion interface with a 500 Kbytes/sec effective data rate.
• Supports daisy-chaining up to seven expansion racks.
• Includes "Hold Last State" functionality to maintain output values during communication loss.
• Optical isolation between logic and field circuits for enhanced protection against electrical noise and surges.
• Three integrated LED indicators for monitoring module status, bus activity, and I/O bus terminator presence.
• Software-configurable design eliminates the need for manual DIP switch settings.

Applications

• Automotive Manufacturing: Coordinated control of high-density I/O points in assembly and paint lines.
• Process Industries: Distributed control for oil, gas, chemical, and pulp/paper processing facilities.
• Water and Wastewater: Management of expansive municipal filtration and treatment networks.
• High-Volume Manufacturing: Rapid machine control for bottling and machining operations.

Technical Specifications

Installation Guidelines

• Ensure the PLC system is powered down before inserting or removing the module from the rack.
• The Bus Receiver Module must always be installed in slot 1 of the expansion rack.
• Use shielded cables for bus connections to minimize EMI interference.
• The total daisy-chain cable length across all racks must not exceed 50 feet (15 meters).
• An I/O Bus Terminator Plug (IC697ACC702) is required at the end of the final expansion rack to ensure proper bus termination.
• Handle with standard ESD precautions to protect sensitive internal electronics.

FAQ

What is the IC697BEM711?

The IC697BEM711 is a Bus Receiver Module (BRM) designed by GE Fanuc for the Series 90-70 PLC system to extend the I/O bus capacity.

What is the maximum expansion distance?

The total, combined cable length for the expansion daisy chain cannot exceed 50 feet (15 meters).

What is the data transmission speed?

The module supports a 500 Kbytes/sec transfer rate.

What do the LED indicators signify?

The three LEDs provide status indication for the module health, rack activity status, and the presence of the required I/O bus terminator plug.