GE Fanuc Series 90-30 IC693BEM331 Genius Bus Controller (GBC) Interface Module

Module Overview

The IC693BEM331 is a powerful communication interface that integrates the GE Fanuc Series 90-30 PLC with the proprietary Genius I/O serial bus. This Bus Controller (GBC) allows the local CPU to command a distributed network of up to 31 Genius devices, including discrete and analog I/O blocks, PowerTraces, and remote I/O drops. By offloading the complex Genius protocol management from the main processor, the IC693BEM331 enables high-speed, long-distance data exchange across industrial sites without compromising PLC scan times.

Detailed Technical Specifications

The IC693BEM331 is designed for high-density data throughput, supporting up to 128 bytes of inputs and 128 bytes of outputs per bus.

System Compatibility and Software Requirements

The IC693BEM331 is compatible with a wide range of Series 90-30 CPUs, provided they meet the minimum firmware criteria. It is natively supported by modern engineering suites including Proficy Machine Edition (PME), VersaPro, and the legacy Logicmaster 90-30 (v5.0 or later). For troubleshooting and field configuration, the module is fully compatible with the Genius Hand-Held Monitor (HHM), allowing engineers to force I/O or monitor bus health directly at the module's front port.

Advanced Network Integration

This module excels in complex architectures by supporting:

• Remote I/O Racks: Interfacing with Series 90-70 I/O via Remote I/O Scanners.

• Field Control: Managing Field Control I/O stations through a Bus Interface Unit (BIU).

• Global Data: Facilitating peer-to-peer communication between multiple Series 90-30, Series 90-70, and Series Six PLCs residing on the same Genius bus.

Technical FAQ

Can I use the IC693BEM331 with the older "Phase A" Genius I/O blocks?

No. The IC693BEM331 is not compatible with very early Phase A Genius blocks. It is designed for use with Phase B and later Genius hardware to ensure timing and diagnostic compatibility.

What do the LED indicators signify during a fault?

The "OK" LED stays steady once internal diagnostics pass. The "COMM OK" LED illuminates when active communication is established with at least one device on the bus. If "COMM OK" is blinking, it indicates an intermittent connection or a configuration mismatch with one or more bus devices.

Is it possible to hot-swap this module?

No. To prevent electrical damage to the 5V backplane or the sensitive Genius transceiver, the rack power must be turned off before inserting or removing the IC693BEM331.