GE IC693BEM331 Genius Bus Controller – A Reliable Interface for Series 90-30 PLCs
The GE IC693BEM331 is a Genius Bus Controller that GE Fanuc manufactures for the Series 90-30 PLC family. This module interfaces the Series 90-30 PLC to the proprietary Genius I/O serial bus. It transmits and receives up to 128 bytes of data and communicates with up to 31 devices on the same bus. Engineers and maintenance teams rely on this controller to connect discrete, analog, and special-purpose field devices efficiently.
Key Specifications and Features
The IC693BEM331 draws less than 300 mA at +5 V DC from the Series 90-30 backplane. It includes two status LEDs on the front panel: OK and COMM OK. The OK LED stays steadily on after successful power-up diagnostics. The COMM OK LED remains on during active communication and blinks when intermittent bus errors occur. The module has an IP20 rating, so it requires installation inside a protective enclosure away from moisture and extreme temperatures.
Compatibility and System Requirements
This bus controller works with specific Series 90-30 CPUs: IC693CPU311K, 321K, 331L or later, and any version of IC693CPU313, 323, 340, 341, 350, 351, 352, 360, 363, and 364. The system must run firmware version 5.0 or later. You can install up to eight Genius Bus Controllers in one Series 90-30 PLC system. Additionally, the IC693BEM331 supports Series 6 controllers like the IC660CBB902F and IC660CBB903F.
LED Indicators and Diagnostics
The front-panel LEDs provide quick operational status. The OK LED indicates that the module passes internal diagnostics and has power. The COMM OK LED shows the health of the Genius bus connection. A steady COMM OK means normal communication; blinking signals intermittent connection or errors. Technicians can use these indicators to troubleshoot without additional tools.
Practical Applications and Integration
The IC693BEM331 connects to Genius blocks for discrete I/O (solenoid valves, motor starters, limit switches) and analog I/O (pressure transmitters, temperature sensors). It also supports remote I/O drops with Series 90-70 racks via remote scanner modules, Field Control I/O stations, and Genius Hand-Held Monitors. Configuration requires a proprietary handheld monitor. Always have qualified personnel perform wiring and maintenance to avoid application malfunctions or property damage.
For a complete solution, pair the GE IC693BEM331 with compatible CPUs and accessories from PLC Source PRO. Contact our team today to check availability and pricing for your next automation project.