Overview
The Fanuc IC693CMM302B is an enhanced Genius communications module (GCM+) for the Series 90-30 programmable logic controller platform. This module enables automatic global data communications between a Series 90-30 PLC and up to 31 other devices on a Genius bus, supporting peer-to-peer and master-slave communication architectures. The IC693CMM302B is single-slot width and designed to install on the CPU baseplate for optimal performance, though it can also be placed on remote or expansion baseplates within the same system.
Key Features
- Enhanced Genius communications protocol (GCM+) enabling up to 31 remote device connections per module
- 128 bytes transmitted and 128 bytes received global data capacity per module
- Supports global registers (%G), discrete input (%I), discrete output (%Q), analog input (%AI), analog output (%AQ), and register memory (%R)
- Distributed I/O architecture implementation with flexible data exchange
- Up to two modules per controller for maximum 62 connected devices
- Peer-to-peer and master-slave communication support
Technical Specifications
- Module Type: Enhanced Genius Communications Module (GCM+)
- Manufacturer: GE Fanuc (now Emerson Automation)
- Series: Series 90-30 PLC
- Data Capacity (Transmit): 128 bytes per device
- Data Capacity (Receive): 128 bytes per device
- Maximum Devices: 32 (1 PLC + 31 remote devices per module)
- Maximum Modules per Controller: 2 units (62 total device capacity)
- Form Factor: Single-slot width backplane module
- Communication Protocol: Genius proprietary protocol
- Compatible Registers: %G, %I, %Q, %AI, %AQ, %R
Typical Applications
- Distributed I/O control architecture across multiple PLCs and field stations
- Legacy Series 90-30 system upgrades requiring enhanced data exchange capacity
- Manufacturing automation with decentralized I/O handling
- Remote device coordination and synchronized control
- Industrial systems requiring Genius bus connectivity for inter-PLC communication
Compatibility & Replacements
Compatible With
- GE Series 90-30 Programmable Logic Controller (PLC)
- Series 90-30 CPU baseplates (primary installation location)
- Series 90-30 remote baseplates
- Series 90-30 expansion baseplates
- GE Fanuc Logicmaster 90 programming software
- Genius bus network infrastructure
Replaces / Drop-In Replacement For
The IC693CMM302B is an enhanced version of the standard IC693CMM301 (basic Genius Communications Module). While not directly interchangeable due to enhanced features, it provides superior performance for systems requiring higher data throughput and capacity. Verify compatibility with your system integrator before ordering.
Works With
- Genius proprietary communication protocol
- Series 90-30 discrete I/O modules
- Series 90-30 analog I/O modules
- Field Control Stations using Genius bus interface
- Remote I/O racks with FIP Bus Scanner modules
- Logicmaster 90 development environment








