GE Fanuc IC697BEM711 Series 90-70 Bus Receiver Module

Product Overview

The GE Fanuc IC697BEM711 serves as the primary Bus Receiver Module for the Series 90-70 PLC system. This module enables the expansion of the local CPU baseplate to multiple remote I/O racks, allowing the controller to manage a significantly larger array of digital and analog I/O points. By acting as the interface for the expansion bus, the IC697BEM711 maintains high-speed data synchronization across the entire PLC architecture, ensuring that the CPU treats remote racks with the same deterministic priority as the local rack.

Technical Specifications

We provide this module in 100% brand new, original factory condition to guarantee the stability of your high-performance Series 90-70 control systems.

Engineering Advantages

• Scalable System Architecture: The IC697BEM711 facilitates the connection of up to seven expansion racks to a single CPU. This scalability allows for massive I/O counts within a single controller configuration, reducing the need for multiple CPUs and complex peer-to-peer networking.

• High-Speed Determinism: Operating at a data rate of 500 Kbytes/sec, the module ensures that I/O scanning remains fast and predictable. This speed prevents latency issues commonly associated with distributed I/O, supporting high-speed machine control and process monitoring.

• Simplified Hardware Addressing: Technicians set rack addresses directly on the module via jumper settings. This hardware-based addressing provides a clear, physical reference for the system topology, making cabinet troubleshooting and rack identification straightforward.

• Daisy-Chain Connectivity: The dual-port design (Expansion port towards CPU and Expansion port away from CPU) supports efficient daisy-chaining. This layout minimizes cable clutter and simplifies the physical bus run between consecutive expansion racks.

FAQs

• What is the function of the "Last Rack" LED?

  The "Last Rack" LED illuminates when the module detects the IC697ACC702 terminator plug. This provides immediate visual confirmation that the expansion bus is correctly terminated and that the system recognizes the end of the signal path.

• Can I use the IC697BEM711 in the same rack as the CPU?

  No. The IC697BEM711 resides in Slot 1 of each Expansion Rack. To initiate the expansion from the CPU rack, you must use a Bus Transmitter Module (such as the IC697BEM713) in the CPU baseplate.

• Does this module require a separate power supply?

  The module draws its 800 mA operating current directly from the Series 90-70 backplane. However, you must ensure that the expansion rack power supply is properly sized to handle the BEM711 plus all other I/O modules installed in that rack.

• How do I ensure signal integrity over the maximum 50-foot distance?

  To maintain the 500 Kbytes/sec data rate over longer distances, always use high-quality shielded cables and ensure the IC697ACC702 terminator is firmly seated in the final module of the chain to prevent signal reflection.