The IC687BEM742 is a specialized FIP (Factory Instrumentation Protocol) Bus Controller module manufactured by GE Fanuc. Designed for integration into the Series 90-70 PLC platform, it occupies a single half-slot in a VME Integrator rack. This module serves as a critical interface for high-speed I/O communication, enabling the PLC to manage data exchange between the central processor and remote field devices via the FIP network. Its dual-channel architecture ensures redundancy, providing high reliability for industrial automation processes.

 

Technical Specifications

• Model Number: IC687BEM742
• Manufacturer: GE Fanuc
• Module Type: FIP Bus Controller (FBC)
• Operating Voltage: 5 VDC
• Power Consumption: 1.4 Amps
• Dimensions: 20 mm (W) x 250 mm (L) x 220 mm (D)
• Weight: 0.79 lbs (approx. 0.36 kg)
• Country of Origin: USA

 

Frequently Asked Questions (Q&A)

💡 What is the primary function of the IC687BEM742 module?

It acts as a communication bridge (Bus Controller) that interfaces the FIP or WorldFIP serial bus with the GE Fanuc Series 90-70 PLC system, allowing the CPU to scan remote I/O devices asynchronously.

💡 Does this module support redundancy?

Yes, the IC687BEM742 features two FIP bus channels, which provide redundant bus capability to ensure continued communication if one path fails.

💡 How do I upgrade the module’s firmware?

The module includes an RS-485 serial port on the front panel, which allows for connection to a PC to perform firmware upgrades directly, eliminating the need to physically replace PROMs.

💡 What do the status LEDs on the front panel indicate?

The module has six LEDs: two are dedicated to module health (MODULE OK and RUN), and the other four indicate communication activity for the two FIP channels (Carrier Detect and Transmit Enable for both Channel 1 and Channel 2).

 

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