Industry Trends in Bus Expansion Technology

In modern industrial automation, the need for scalable and flexible control systems drives demand for reliable bus expansion modules. As factories adopt distributed architectures, modules like the IC697BEM711 enable seamless integration of additional I/O and specialty modules. This trend supports the growing complexity of manufacturing processes while maintaining system integrity.

Introducing the IC697BEM711 Bus Receiver Module

The GE IC697BEM711 is a bus receiver module from the Series 90-70 programmable logic controller family, originally manufactured by GE Fanuc and now under Emerson Automation. It functions as a bus expansion module (BEM) designed to connect additional racks to the CPU baseplate. This module is compatible with IC697 PLC systems and mounts directly in a single slot of the Series 90-70 CPU baseplate.

With two 25-pin D-shell connectors, the IC697BEM711 provides two communication interfaces. Port 1 serves as an expansion port towards the CPU, while Port 2 connects away from the CPU to additional expansion racks. This daisy-chain arrangement allows up to seven expansion racks to be linked, extending system capacity significantly.

Technical Specifications and Performance

The IC697BEM711 operates on a 5 Volts DC input voltage and draws 0.8 Amps from the backplane. Its effective data rate reaches 500 Kbytes/sec, ensuring efficient communication between racks. The maximum cable length between modules is 50 feet (15 meters), providing flexibility in rack placement.

Rack addressing is configured via jumper settings, and the module includes three status LED indicators: Module OK, Last Rack, and Bus Active. These LEDs simplify troubleshooting by showing operational status at a glance. The module uses non-isolated differential communication for data transmission.

Applications in Modern Manufacturing

In large-scale manufacturing facilities, the IC697BEM711 enables system expansion without replacing existing controllers. For example, a production line with multiple workstations can add remote I/O racks to monitor sensors and actuators across the floor. This reduces wiring complexity and centralizes control logic.

Another application involves system fault isolation. By isolating an expansion rack for maintenance, engineers can troubleshoot issues without disrupting the entire PLC system. The module also supports output hold, allowing output modules in a failed or maintenance rack to retain their last state, minimizing process interruptions.

Compatibility and Integration

The IC697BEM711 is designed for the Series 90-70 CPU baseplate and is compatible with IC697 PLC systems. It requires one slot and is typically installed in Slot 1 of the baseplate. The last expansion rack must include a terminating resistor (catalog number IC697ACC702) to signal the end of the network.

Configuration is performed using MS-DOS or Windows programming software packages. The module supports VME standard C.1, ensuring reliable operation in industrial environments. For cable connections, options include 5-foot, 10-foot, 25-foot, and 50-foot cables with specific catalog numbers.

Frequently Asked Questions About the IC697BEM711

What is the maximum number of expansion racks supported by the IC697BEM711?

The IC697BEM711 supports up to seven expansion racks, allowing significant system scalability. Each rack can house additional I/O and specialty modules, extending the PLC's capabilities.

What are the power requirements for the IC697BEM711?

The module requires a 5 Volts DC input voltage and draws 0.8 Amps from the backplane. This low power consumption makes it suitable for integration into existing Series 90-70 systems without overloading the power supply.

How is the IC697BEM711 configured?

Configuration is done via jumper settings for rack addressing and through MS-DOS or Windows programming software. The module does not require complex setup, simplifying installation and maintenance.

Company Strength and Supply Assurance

PetroPartsOnline specializes in industrial automation and oil and gas parts, offering genuine components like the IC697BEM711. With a focus on quality and availability, the company supports customers in maintaining and upgrading their control systems. For lifecycle status, please verify current availability with PetroPartsOnline before ordering.