Description
The GE Fanuc IC687BEM742 is a dual-channel FIP Bus Controller (FBC) designed specifically for the GE Series 90-70 programmable logic controller (PLC) platform. This specialized communication module mounts directly into a standard VME Integrator rack slot, serving as a high-speed master interface to manage distributed remote I/O drops, field control stations, and peripheral network nodes across industrial automation architectures.
📊 Technical Specifications
- Brand: GE Fanuc (General Electric)
- Model / MPN: IC687BEM742
- Series: Series 90-70 PLC / FIP Bus Network Series
- Product Name: FIP Bus Controller (FBC) Module
- Manufacturing Status: Mature / Legacy Industrial Automation Spare Part
- Dimensions: Standard Series 90-70 VME half-slot module profile
- Weight: Approx. 0.79 lbs (0.36 kg)
- Country of Origin: USA / Global Manufacturing Standards
- Power Requirements: Powered internally via VME rack backplane (5 VDC, approx. 1.4 A)
- Communication Interfaces: Dual FIP bus channels (RS-485 physical layer) and a front-panel 15-pin RS-485 serial port for firmware upgrades
🛠️ Operation Guidelines & Installation
Installation and replacement must be performed strictly by qualified industrial automation technicians or control system engineers. Ensure that main rack power is completely locked out and de-energized before inserting or removing the module to prevent electrical shock or electrostatic discharge (ESD) damage. Align the module carefully with the VME rack slot rails, press firmly to seat the backplane connectors, and secure the top and bottom retention screws.
🔌 Power-Up and Power-Down Sequence
Verify that all FIP bus network cables, terminal connections, and network terminators are correctly wired and secured prior to system startup. Energize the PLC rack power supply to boot the module. Observe the front-panel status LEDs—the top Module OK and Run LEDs should illuminate normally, while the bottom channel LEDs (Carrier Detect and Transmit Enable) indicate active fieldbus communication traffic. For shutdown, power down the VME rack safely.
📝 Product Usage Instructions
The IC687BEM742 controller manages asynchronous I/O data exchanges between remote drops and the master CPU once per scan. Module configuration parameters, channel assignments, and network node maps are set up using Windows-based programming software (such as Proficy Machine Edition or Logicmaster 90-70). Keep the control environment clean, dry, and thermally controlled to ensure long-term network stability.
❓ Common Questions (Q&A)
Q: What do the front-panel diagnostic LEDs indicate?
A: The top LEDs show module health (Module OK and RUN status), while the channel LEDs (CD1, TEN1, CD2, TEN2) flash to verify carrier detection and transmission activity on the dual FIP communication channels.
Q: How many bus controllers can be used in a single Series 90-70 system?
A: Up to 31 total bus controllers of various types can be included in an IC697 PLC system, with a maximum of four dedicated FIP Bus Controller modules.
Q: Does this module require manual DIP switch configuration?
A: No, operating parameters and network addresses are configured entirely through the programming software environment rather than physical hardware switches.
🚀 Recommended Related Models
- GE Fanuc IC697CHS782 (Series 90-70 VME Integrator Rack)
- GE Fanuc IC693RNI001 (Remote I/O Scanner Module)
- GE Fanuc IC697CP771 (Series 90-70 CPU Module)
- GE Fanuc IC697CPX928 (Series 90-70 High-Performance CPU)
- GE Fanuc IC660BBA020 (Genius Discrete Input Block)
- GE Fanuc IC660BBD020 (Genius Discrete Output Block)
- GE Fanuc IC697PWR711 (Series 90-70 Power Supply Module)
- GE Fanuc IC697BEM713 (Legacy FIP Bus Controller)
- GE Fanuc IC697CMM711 (Communication Coprocessor Module)
- GE PACSystems RX3i Network Interface Unit
